Optical Ethernet eyes low power, higher speeds Sep 17, 2009
The device could hit rates above 60 Gbits/s using direct modulation, Lott said. "Companies such as Avago and Finisar are certifying devices up to 20-25G now," Lott said. (EETimes)
Ethernet caught in demand/cost squeeze Sep 17, 2009
A terabit technology would require new and complex modulation schemes and other advanced techniques, he added. About a third of those attending the meeting said they would support work on a 400G Ethernet standard. (EETimes)
Signum Biosciences Awarded Phase II SBIR Grant by the NIH for the Treatment of Rosacea Sep 12, 2009
Signum Biosciences is a private biotechnology company dedicated to developing small-molecule therapeutics derived from its Signal Transduction Modulation platform. Signum is a pioneer of this new technology which modulates targets rather than just switching-them on or off. (PR Newswire)
NEC Exhibits PASOLINK NEO High Performance (HP) at Broadband World Forum Europe 2009 Sep 8, 2009
PASOLINK NEO HP is the top end of NEC's PASOLINK NEO product line and boasts Multilevel Quadrature Amplitude Modulation (256QAM), which more than doubles the machine's transmission capacity when compared to current PASOLINK models (more than 1Gbps capability). Moreover, the system boasts VLAN/Qos/AMR functionality, and high capacity IP data transmission, which is required for mobile backhaul as well as for networks supporting WiMAX and communications between mobile phone base stations and base... (JCN Network, Japan)
Liberty Sports Group Moves To MPEG-4 HD With Cisco Sep 5, 2009
The newer format provides up to double the bandwidth efficiencies as the MPEG-2 format, and DVB-S2 forward-error correction and modulation also help improve satellite bandwidth use. "Like Cisco, we take a long-term view when it comes to video distribution architecture," Liberty Sports Group chief technology officer Brian McHale said in a statement. (Multichannel News)
Silk-based optical waveguides meet biomedical needs Sep 1, 2009
"The use of a biocompatible, biodegradable polymer like silk to guide light opens up new opportunities in biologically based modulation and sensing along with an opportunity to integrate light delivery within living tissue.". The research capitalized on Tufts' knowledge of silk-based biopolymers and biophotonics and the expertise of UIUC Professor Jennifer A. Lewis and graduate student Sara T. Parker in direct-write assembly to create complex planar and three-dimensional structures. (EurekAlert!)
Mir Imran, Healthcare Industry Veteran, to Lead Modulus Aug 22, 2009
Imran serves on the Board of Directors of a number of medical device companies Bodymedia, Nfocus Neuromedical, Intrapace, Egeen International, and Spinal Modulation. Mr. Imran holds an MS in bioengineering and a BS in electrical engineering from Rutgers. (PR Newswire)
Fujitsu Optical Components and Furukawa Electric to Jointly Develop Integrated Receivers for 40Gbps and 100Gbps Optical Networks Aug 19, 2009
The multi-level modulation using phase modulation or digital coherent detection is being introduced into 40Gbps and 100Gbps optical transmissions compared with traditional On-Off Keying (OOK), since these are not easily affected by signal distortion and noise caused by transmission fibers. The receiver part for DQPSK(2) modulation transmitting 2 bits per symbol consists of the delay line interferometer(3) and the balanced receivers(4), and the receiver part for DP-QPSK(5) modulation of digital... (JCN Network, Japan)
Fujitsu Introduces Compact Integrated DPSK Receiver for 40Gbps Optical Networks Aug 12, 2009
Until recently, generating digital signals of 1 and 0 by turning a light on and off had been the common method of intensity modulation for optical networks. However, responding to the growing needs for ultra-high-speed and long-distance transmission, phase modulation has become the mainstream modulation method for 40Gbps optical networks ... Phase modulation generates digital signals of 1 and 0 by changing the phase of light while allowing it to be in the on position. (JCN Network, Japan)
Comparing hybrid cars Aug 9, 2009
Cons The Escape s powertrain and instrument panel look dated compared with the Fusion s. But like the Fusion, reaching higher speeds on electric power requires a careful on and off modulation with the throttle, which can get tiring. The engine buzzes loudly above 2,500 revolutions per minute, and the Escape s price quickly escalates far above other compact SUVs. (Boston Globe)
Cloud ships 'to deflect sun's rays and stop global warming'... Aug 8, 2009
" Facts, who needs them. Who the hell qualifies as a "scientist" these days. Remember, only you can prevent global warming - by spending more tax dollars. Mmm, nutty goodness on August 08, 2009 at 06:36 AM I have a better idea. We can breed giant emus that have been genetically modified to fart water vapor and introduce them to every continent. Emu farts are the only way we can save our planet! Monkey Johnson on August 08, 2009 at 06:36 AM Yes the planet is warming, then it will cool, then warm.... (The Drudge Report)
Researchers Reveal Ocean Acidification At Station ALOHA In Hawaii Aug 8, 2009
Physical and biogeochemical modulation of ocean acidification in the central North Pacific. PNAS, 2009; 106 (30): 12235 DOI. (Science Daily)
Translation Please: The Problem of Units, Part Two Aug 3, 2009
Charlies math goes like this: The cable operator who maintains 135 digital channels, using 256-QAM modulation, is actually sending 5,670,000,000 bits of information every second most of which falls on the floor, unused. . (Multichannel News)
My Sister's Keeper Aug 1, 2009
Diaz plays the part beautifully, with as much modulation as she can. That is no surprise, because she's a great comedian and comedy is harder than drama any day. (Sydney Morning Herald -- Entertainment)
Home Theater Audio Aug 1, 2009
Uncompressed PCM (pulse code modulation) ... Uncompressed PCM (pulse modulation). (Suite101.com)
* WiMAX to buck trend as sector production suffers Jul 30, 2009
11n modulation standard would replace the 802. 11g standard as the prices of 802. (Taipei Times, Taiwan -- World)
BigBand's 'Supergroup' Jul 27, 2009
The vendor's new Converged Video Exchange (CVEx for short) is designed to let operators create a single pool of quadrature amplitude modulation channels. The system then manages subscriber requests for services and allocates bandwidth on the fly, working with other resource managers. (Multichannel News)
Motorola Wants To Clean Up Cable's Upstream Jul 25, 2009
The modulation schema is aimed at reducing impulse noise particularly between 5 and 15 MHz, and can increase overall bandwidth available in the 5-42 MHz range to from 100 Mbps to 150 Mbps, according to Motorola ... Todd Kessler, Arris's vice president of CMTS product management, said S-CDMA has not been widely deployed by MSOs because it did not provide as much improvement as a different modulation scheme for the upstream, advanced time division multiple access (ATDMA). (Multichannel News)
Silicon With Afterburners: New Process Could Be Boon To Electronics Manufacturer Jul 25, 2009
ScienceDaily (July 24, 2009) Scientists at Rice University and North Carolina State University have found a method of attaching molecules to semiconducting silicon that may help manufacturers reach beyond the current limits of Moore's Law as they make microprocessors both smaller and more powerful. Moore's Law, suggested by Intel co-founder Gordon Moore in 1965, said the number of transistors that can be placed on an integrated circuit doubles about every two years. (Science Daily)
Hurricane-calming technology? Bill Gates has a plan Jul 16, 2009
First requested by Gates and colleagues last year, the patents describe methods "not limited to atmospheric management, weather management, hurricane suppression, hurricane prevention, hurricane intensity modulation, hurricane deflection" to manage storms. Given the scope of the applications, "I suspect these will have a lengthy stay in the examiner's office. They are talking about some interesting issues here," says patent expert Gene Quinn of IPWatchdog. (USA Today -- Tech)
Alzheimer's disease drug treats traumatic brain injury, report GUMC researchers Jul 13, 2009
The findings further cement the connection between Alzheimer's disease and traumatic brain injury, Burns says, and show that "modulation of beta and gamma secretase may provide novel therapeutic targets for the treatment of traumatic brain injury.". . (EurekAlert!)
Cool down with a fan and iced tea Jul 3, 2009
It s about notebook and netbook keyboards who don t have a touch modulation ... Its about notebook and netbook keyboards who dont have a touch modulation. (Atlanta Journal-Constitution -- Opinion)
Big Impact From Tiny Semiconductor Lasers Jul 1, 2009
The list of successes goes on: first to develop a green laser of this quality; first to develop infrared lasers of high brightness; first to achieve high modulation ... 7W laser using only an 80mA modulation current. (Science Daily)
Fly Larvae Shun The Light Jun 30, 2009
However, this modulation does not appear to occur at the photoreceptor level and may be mediated by 5-HT1ADro receptors. These findings may provide clues to help identify the target neurons of the serotonin signalling, which the authors believe could be critical for light-controlled movement. (Science Daily)
Melanopsin And Sleep Modulation: A Bright Future For Light Therapy? Jun 27, 2009
Melanopsin And Sleep Modulation: A Bright Future For Light Therapy ... Melanopsin And Sleep Modulation: A Bright Future For Light Therapy. (Science Daily)
Scientists Break Light Modulation Speed Record -- Twice Jun 23, 2009
ScienceDaily (June 22, 2009) Researchers have constructed a light-emitting transistor that has set a new record with a signal-processing modulation speed of 4 ... The modulation speed of either a light-emitting diode or a light-emitting transistor is limited by the rate at which electrons and holes (the minus and plus charges the carriers of current) recombine ... To increase the modulation speed of their light-emitting transistor, the researchers reduced the emitter size, increased the... (Science Daily)
NPL helps develop unique new calibration tool for radio frequencies Jun 23, 2009
However, in the case of amplitude modulation (AM), Fluke had a measurement problem ... Users can now be even more confident that the Fluke 9640A RF Reference Source can be used to calibrate a broad range of RF test equipment including spectrum analyzers, modulation meters and analysers, RF power meters and sensors, measurement receivers, frequency counters and attenuators. (EurekAlert! -- Business News)
VTC Selects TANDBERG Television for HD and SD Playout to DTT and Satellite Jun 16, 2009
Hong Kong 15th June 2009 TANDBERG Television, part of the Ericsson group (NASDAQ:ERIC), announced today that Vietnam Multimedia Corporation (VTC) has selected TANDBERG Television to provide the encoding, multiplexing and modulation for ten high-definition and 32 standard-definition channels that are simultaneously played out over satellite and digital terrestrial networks. The Vietnamese broadcaster and platform operator combines MPEG-2 SD and MPEG-4 AVC HDTV channels in the same TANDBERG... (Multichannel News)
Chips Down on Personal TV Jun 16, 2009
If every single household in a neighborhood were to receive its own, personalized video stream, cable networks would not only need more spectrum reallocated for those services they'd also need a bunch of new quadrature amplitude modulation devices. BroadLogic Network Technologies this week is expected to introduce the TeraQAM BL85000, a chip designed to quadruple the density over existing QAM solutions for less than 50% of the cost. (Multichannel News)
Hill To Get Earful On Commercial Volume Jun 6, 2009
CALM Act Would Require FCC To Set Volume Standard Across, Cable, Satellite, Broadcast. John Eggerton -- Multichannel News, 6/5/2009 4:24:00 PM MT. (Multichannel News)
Suprema Receives FBI Certification for Dual Fingerprint Live Scanner Jun 1, 2009
The IAFIS IQS specifies the data acquisition standards for the fingerprint portion of the virtual fingerprint card, such as modulation transfer function (MTF) and signal-to-noise ratio. The MTF measures how much of the fingerprint data can be acquired; reflects the quality of the optics, the scanner detectors and the analog to digital converters. (JCN Network, Japan)
Statins May Have A Negative Impact In Multiple Sclerosis Patients May 29, 2009
The study uses a model of myelin damage that has relatively little inflammation and mimics the demyelinating aspect of MS, allowing MNI researchers to determine the direct effect of long-term statin therapy on remyelination, independent of its indirect effects mediated via immune modulation. "The results of our study indicate that simvastatin has in fact, a slightly deleterious effect on myelin under non-pathological conditions," adds Dr. Miron. (Science Daily)
DFG establishes nine new collaborative research centers May 28, 2009
Collaborative Research Centre 832, "Molecular Basis and the Modulation of the Cellular Interactions in the Tumour Microenvironment", therefore seeks to determine the key mechanisms that cause and affect the interaction between cancer cells and their microenvironment on a molecular level. At the forefront will be the research of molecular modifications in the architecture, differentiation and mobility of cells in tumour tissue, as well as the immunological composition of the environment of a... (EurekAlert! -- Business News)
Arthritis Drug Might Prove Effective In Fighting The Flu, Study Suggests May 27, 2009
Teijaro et al. Costimulation Modulation Uncouples Protection from Immunopathology in Memory T Cell Responses to Influenza Virus. The Journal of Immunology, 2009; 182 (11): 6834 DOI. (Science Daily)
Balloon floated 'to catch cosmic rays' May 24, 2009
"The data from the balloon flights will be used to study solar modulation, the variation in cosmic ray intensity that's correlated with solar activity. "The level of solar activity rises and falls over a period of approximately 11 years and influences cosmic ray intensity. As solar activity rises, cosmic ray activity decreases. (India Times, India -- Health/Science)
Multiferroics -- making a switch the electric way May 23, 2009
The paper is titled: "Electric modulation of conduction in multiferroic Ca-doped BiFeO3 films." Co-authoring the paper with Ramesh were Chan-Ho Yang, Jan Seidel,Sang-Yong Kim, Pim Rossen, Pu Yu, Marcin Gajek, Ying-Hao Chu, Lane Martin, Micky Holcomb, Qing He, Petro Maksymovych, Nina Balke, Sergei Kalinin, Arthur Baddorf, Sourav Basu and Matthew Scullin. The next generation of computers promises to be smaller, faster and far more versatile than today's devices thanks in part to the anticipated... (EurekAlert!)
Key Protein Regulating Inflammation May Prove Relevant To Controlling Sepsis May 16, 2009
D., an expert in cancer cell biology at the National University of Singapore's Yong Loo Lin School of Medicine, said, "Taken together, the work in Dr Tergaonkar's lab has significantly advanced our understanding of the regulatory mechanisms of NF B and expanded the functional scope of NF B. More important, such findings offer new opportunities for modulation of the NF B signaling pathway and for exploring new therapeutic strategies in various human diseases such as cancer and sepsis.". Journal... (Science Daily)
'Lab On A Tube' Monitoring Device Developed May 6, 2009
3, 2009) Physicians can dramatically reduce the radiation dose delivered to patients undergoing coronary CT angiography in a "triple rule-out" protocol by simply using tube current modulation, according to a. (Apr. (Science Daily)
Mechanisms Of Self-control Pinpointed In Brain May 1, 2009
Self-Control in Decision-Making Involves Modulation of the vmPFC Valuation System. Science, 2009; 324 (5927): 646-648 DOI. (Science Daily)
SES Americom-New Skies Picks Up MTVN Six-Pack Apr 30, 2009
To conserve capacity for the rapidly growing demand for HD channels, SES was an early adopter of MPEG-4 and was the first to put DVB-S2 satellite modulation in its birds, McGuirk said. "There wouldn't be enough capacity to meet demand if we hadn't done that," he said. (Multichannel News)
Forty Under 40 Apr 28, 2009
Elder was directly involved in Comcasts switched digital video edge quadrature- amplitude modulation unit purchase from Arris, the initial Time Warner Cable cable-modem termination system business and Comcasts many long-term media terminal adapter and CMTS purchase agreements that have resulted in 300% growth in that MSOs business with Arris within a three-year period. The Internet has changed everyones perspective on how they receive content and information, he said. (Multichannel News)
New Method Could Lead To Narrower Chip Patterns Apr 17, 2009
Remarkably, the new technique, which the researchers call absorbance modulation, makes it possible to create lines that are only about one-tenth as wide as the wavelength of light used to create them. Part of the trick was to find a suitable photochromic material whose clear and opaque parts would remain stable after the initial exposure to light. (Science Daily)
Cequent tkRNAi Technology to be Presented at the Centennial Meeting of the American Association for Cancer Research Apr 16, 2009
Tuesday, April 21 Modulation of ABCB1-Mediated Multidrug Resistance (MDR) by TransKingdom RNA Interference (tkRNAi) 8 am - noon Hall B-F Resistance against chemotherapy frequently complicates Poster Section 26 the clinical treatment of patients with cancer. Poster board #6 Professor Herman Lage of Charite University Hospital, Abstract #LB-199 Berlin, Germany, will present data describing the targeting of chemotherapy resistance with tkRNAi. (PR Newswire)
My daughter, the stranger: Apr 12, 2009
" There is a wide and arresting literature on madness, particularly on bipolar 1 (formerly manic depression), the disease that afflicted Sally and many artists before her, including Byron, Sylvia Plath and the poet Robert Lowell. But most of it is written by people who have themselves been psychotic. There are few books written from the perspective of someone close to, but not inside, psychosis - books from "the other shore", as Greenberg puts it. On one level, the story is very simple. Over a... (Sydney Morning Herald)
MIT researchers claim novel pattern exposure Apr 11, 2009
The new absorbance modulation technique makes it possible to create lines that are only about one-tenth as wide as the wavelength of light used to create them. Researchers had to find a suitable photochromic material one that changes its color, and therefore its transparency, in response to light whose clear and opaque parts would remain stable after the initial exposure to light. (EETimes)
To Swim Or To Crawl: For The Worm It's A No Brainer Apr 9, 2009
Berri et al. Forward locomotion of the nematode C. elegans is achieved through modulation of a single gait. Advanced Online Publication Articles for Human Frontier Science Program journal, 2009; 1 (1): 100 DOI. (Science Daily)
CET Teleport Launches iDirect Evolution DVB-S2/ACM Network to Expand Services Over Africa Apr 7, 2009
Built on the DVB-S2 standard and featuring Adaptive Coding and Modulation (ACM) capabilities, iDirect's Evolution platform delivers dramatic gains in bandwidth efficiency. The Evolution product line can deliver a 30 percent improvement in bandwidth efficiency over DVB-S systems. (PR Newswire)
Impulse Dynamics Announces Pivotal Results at the American College of Cardiology Annual Meeting Late-Breaking Session Mar 30, 2009
Previous studies have demonstrated safety and efficacy of the OPTIMIZER System's cardiac contractility modulation (CCM) signals when applied for three months. The FIX-HF-5 study was designed to test the longer term effects in the largest randomized study to date. (PR Newswire)
Sharp to Introduce Receiver Tuner Module for One-Seg Digital Broadcasts Mar 27, 2009
The VA3A5JZ923 combines two tuner ICs with two OFDM demodulation ICs(2) to allow two One-Seg broadcast programs to be received simultaneously, enabling such features as dual-screen display, or background recording of another program on a different channel ... (1) Data source: JEITA (Japan Electronics and Information Technology Industries Association)(2) OFDM (Orthogonal Frequency Division Multiplexing) is a digital modulation scheme adopted for use in terrestrial digitalbroadcasting. (JCN Network, Japan)
Transcriptional signatures of BALB/c mouse macrophages housing multiplying Leishmania amazonensis amastigotes Mar 21, 2009
30 fold change values), and the modulation of various genes involved in polyamine synthesis and in pro/counter-inflammatory signalling. Conclusions. (BioMed Central)
High-speed signal mixer demonstrates capabilities of transistor laser Mar 20, 2009
"In addition to the usual current-modulation capability, the tunnel junction provides an enhanced means for voltage-controlled modulation of the photon output of the transistor laser," said Nick Holonyak Jr., a John Bardeen Chair Professor of Electrical and Computer Engineering and Physics at the U. of I. "This offers new capabilities and a much greater sensitivity for unique signal-mixing and signal-processing applications." ... Those photons are then reabsorbed to create new pairs of electrons... (EurekAlert!)
OFC/NFOEC features breakthroughs in next-generation ethernet, metamaterials, networks Mar 18, 2009
Achieving these high speeds requires data to be "multiplexed," a process in which a single high-speed stream is split into several slower streams using a multi-level modulation format and polarization multiplexing technologies. The slower data streams are received and reassembled at the end of the line by an expensive device called a coherent receiver. (EurekAlert!)
ZeeVee Honored with Two 2009 Mark of Excellence Awards Mar 18, 2009
ZeeVee, Inc. develops HD encoder and modulation technologies for video distribution using broadcast and cable technologies, delivered at game-changing cost points. For commercial applications and custom home applications, the company offers the ZvPro line of products. (Yahoo! Wire -- Entertainment News)
Fujitsu IP-9500 MPEG-4 AVC Encoder now Features DVB-S and DVB-S2 Modulation Capabil Mar 17, 2009
Sunnyvale, CA, Mar 17, 2009 - (JCN Newswire) - Fujitsu Computer Products of America, Inc., a leading supplier of innovative computer products and broadcast solutions, announced today that the Fujitsu IP-9500e MPEG-4 AVC codec now features Digital Video Broadcasting-Satellite (DVB-S) and Digital Video Broadcasting-Satellite-Second Generation (DVB-S2) modulation functionality to transmit HD signals over satellite links. The integration of DVB-S/S2 capabilities into the IP-9500 eliminates the need... (JCN Network, Japan)
Adverse Health Effects from the Operation of Digital Broadcast Television Stations (DVBT) Mar 10, 2009
In Germany, DVB T (Digital Video Broadcasting Terrestrial) uses Orthogonal Frequency Division Multiplex Modulation. The fundamental principle of this type of modulation works by spreading the information across several thousand carrier frequencies directly adjacent to each other. (Multichannel News)
Cardium Completes $3.5 Million Credit Facility Mar 6, 2009
Cardium's InnerCool Therapies subsidiary is a San Diego-based medical technology company in the emerging field of temperature modulation therapy to rapidly and controllably cool the body in order to reduce cell death and damage following acute ischemic events such as cardiac arrest or stroke, and to potentially lessen or prevent associated injuries such as adverse neurological outcomes. For more information about Cardium's InnerCool subsidiary and patient temperature modulation, including... (PR Newswire)
Cell Microenvironments Hold Key To Future Stem Cell Therapies Mar 5, 2009
"Our results further suggest that rational modulation of the microenvironmental milieu can impose specific differentiation phenotypes on normal stem or progenitor cells, and perhaps even impose phenotypically normal behavior on malignant cells during tissue genesis. All of this points to the rational manipulation of adult stem and progenitor cells as a promising pathway for beneficial therapies." ... One of the most intriguing results in this study was the suggestion that modulation of stem and... (Science Daily)
Pak Datacom Limited Installs iDirect Hub in Pakistan's Financial Capital Mar 4, 2009
The company will roll out a next-generation network based on DVB-S2 with Adaptive Coding and Modulation (ACM) in an effort to meet growing demand for satellite broadband connectivity from major banks, government organizations, as well as national and multinational operators ... iDirect's Evolution product line supports a wide range of carrier IP data rates, FEC codes and modulation types, including up to 16APSK on outbound and up to 8PSK on the inbound ... The Evolution platform also supports... (PR Newswire)
Translation Please: Whats Up In The Upstream? Feb 24, 2009
Modulation the techniques used to imprint data onto a carrier comes next. A noisy, bumpy path requires a sturdier (read: slower) modulation. (Multichannel News)
The long test road to LTE Feb 24, 2009
But the commonalities among the two broadband services' modulation and transmission schemes have not led to a concerted effort by test equipment companies and test engineers to develop common design, development and test platforms for the standards. For example, a software-defined platform on which WiMax and LTE chips could be developed simultaneously, with optimization for one standard or the other occurring during the last chip design steps, would save on development and testing costs in an... (EETimes)
Economic realities to impact LTE roll-out Feb 19, 2009
"The reality is that LTE does not seem to offer any significant advantage in spectral efficiency. With the latest MIMO technology and high order modulation, you can get the high order data rates with HSPA+ that people need now. But of course we will support both technologies with chipsets, and not just for handsets but also for extensions such as femtocells for improved indoor coverage.". Sierra Wirelesss CEO Jason Cohenour revealed that as well as the Turbo 21 for the Australian market, and the... (EETimes)
Harris Stratex Networks' New Eclipse Adaptive Optimization Maximizes Backhaul Efficiency for Introduction of IP Data Transport for 4G Mobile Network Evolution Feb 17, 2009
Adaptive Optimization for the first time combines Adaptive Modulation, RAN Optimization, and Pseudowire transport to deliver maximum bandwidth utilization and efficiency, while providing a low risk step to an all IP transport. Adaptive Optimization solves the lack of carrier class reliability when using Adaptive Modulation alone whereby adverse path conditions periodically constrict the throughput available for IP services increasing the probability of service interruptions for end users ...... (PR Newswire)
Cal-Comp Reveals Design of Low-power Mobile Phone Featuring a mirasol Display Feb 16, 2009
Based on a reflective technology called interferometric modulation (IMOD), mirasol displays harness ambient light and require no backlighting, thereby consuming significantly less power than standard display technologies. To learn more about mirasol displays, please visit. (PR Newswire)
Rabbit Ears To Stage a Comeback Thanks To DTV Feb 15, 2009
DTV could have been made alot more robust if they had gone with ESVB or OFDM (Which Wifi uses) as a modulation. It seems that with 8SVB they picked the very worst modulation possible. (Multichannel News)
Fujitsu Laboratories Develops CMOS Transmitter IC for 40Gbps Optical Transmission Systems Feb 13, 2009
By taking advantage of high-integration capabilities available in CMOS technology, the transmitter IC also has ability to output two 20Gbps signals in order to support a signal modulation technique intended for long-distance transmissions (Figure 3). This CMOS-based transmitter IC makes it possible for multiple systems to be handled by single chip, which is anticipated to lead to widespread availability of 40Gbps optical transmission equipment. (JCN Network, Japan)
