See physical layer and physical.
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2008 The Computer Language Company Inc. All rights reserved. |
Additional Resources
- MWC08: Bluetooth SIG creating spec to harness speed of WiFi
- I am a big fan of Bluetooth technology and am actually using a Think Outside Bluetooth keyboard to type this article on my new Fujitsu U810 Tablet PC. Blair sent me some big news from the Bluetooth SIG announcing that they are developing a new radio substitution method that will...
- Blog posts 2008-02-12
- Look for Power Tradeoffs in 10GBASE-T Ethernet
- IEEE 802.3, a 10GBASE-T Ethernet standard ratified in June 2006 following four years of development, is considered a mature and worthy successor to the 100BASE-T and 1000BASE-T standards, which were ratified in 1995 and 1999, respectively. The marketplace is ready for a speed upshift from the network: commodity servers have...
- White papers 2008-01-25
- Study the WiMAX physical (PHY) layer and the benefits and tradeoffs associated with its various modes
- Study the WiMAX physical PHY layer in this chapter download from Fundamentals of WiMax: Understanding Broadband Wireless Networking. Investigate the nature of the WiMAX PHY layer and understand the various benefits and tradeoffs associated with its various options or modes. Chapter coverage includes: Examining the various components...
- Book chapters 2007-10-11
- OC-192c/STM-64c and 10 Gigabit Ethernet WAN PHY
- The introduction of 10 Gigabit Ethernet (10 GbE) WAN PHY into the IP/Ethernet networking community has led to confusion over the applicability between 10 GbE WAN PHY and OC-192c/STM-64 interfaces. Both of these interfaces support transmission at 9.6 Gbps, support SONET/SDH framing, and can be connected to SONET/SDH ADM or...
- White papers 2007-08-01
- Why Silicon Valley has to break the Telco/Cable Comms Cartel
- Why Silicon Valley has to break the Telco/Cable Comms CartelGoogle & WiMAXSince Brazil is leading the way with a PHY layer for WiMAX down in the 700MHz spectrum, it would be a natural for Google to follow the Brazilian government's example and go the WiMAX route.http://wireless.fcc.gov/auctions/data/bandplans/700lower.pdfThere's going to be almost...
- Discussion threads 2007-07-11
- About the 10 Gigabit Ethernet Standard
- 10 GbE Physical layer specifications PHY and supported media and reaches, as defined in IEEE 802.3 2005. In Ethernet standards, the different optical and copper media are known as types of physical media-dependent interfaces PMDs. The 10 GbE MAC operates at 10 Gbps at its service interface towards PHY...
- White papers 2007-07-01
- Broadband over powerlines: It may take awhile
- Broadband over powerlines: It may take awhileIt will take a LONG while....While it would be REALLY nice to see some more competition in the broadband market pretty much sucks now, I'm not holding my breath. As I've said all along in regards to BPL, if you're over 40, you...
- Discussion threads 2007-02-23
- On the Upgrade of an Optical Code Division PON With a Code-Sense Ethernet MAC Protocol
- Optical Code-Sense Multiple Access / Collision Detection (OCSMA/CD) is a novel Medium Access Control MAC protocol in the optical PHYsical layer PHY which is presented here for the first time. OCSMA/CD has its primary and most attractive application to transparently run Ethernet or packet based services on fiber-optic networks which...
- White papers 2007-02-13
- Unleashing the 10 Gigabit Ethernet Market: Proving 10GBASE-T Performance and Reliability Under Worst-Case Conditions
- With the advent of 10GBASE-T for 100 meter links of twisted pair copper cabling, 10 Gigabit Ethernet is moving into the market to provide simple, cost-effective, standards-based products for enterprise and data center networks. 10 Gb/s Ethernet on copper will more than halve the cost of 10 Gb/s links, by...
- White papers 2007-01-28
- Advanced PHY Layer Technologies for High Speed Data Over Cable
- This paper highlights the major differences between DOCSIS 2.0 and earlier versions, and discusses advantages of deploying the advanced PHY technology available nowadays. This paper summarizes numerous field and lab tests that demonstrate how Cable Modem Termination Systems CMTSs and cable modems using advanced PHY silicon perform in the presence...
- White papers 2007-01-04
- Optical Code Sensing Multiple Access / Collision Detection (OCSMA/CD) on a Passive Optical Network Employing a Single Spectral En/Decoder
- Optical Code-Sense Multiple Access / Collision Detection (OCSMA/CD) is a novel Medium Access Control MAC protocol in the optical PHysical Layer PHY. OCSMA/CD has its primary and most attractive application to transparently run Ethernet or packet based services on fiber-optic networks which employ Optical Code Division Multiplexing OCDM or Optical...
- White papers 2006-12-05
- 10G Ethernet Adoption in Volume Servers
- When forecasting the adoption of next-generation Ethernet technologies, the question is not if but when the technology reaches broad deployment. One can draw some lessons from past technology transitions, but 10GbE presents some new challenges, and server technology is evolving at the same time. Sold as NICs, initial 10GbE server...
- White papers 2006-12-01
- Towards an Architecture for Efficient Spectrum Slicing
- With the increased demands for wireless spectrum, dynamic spectrum sharing is emerging as an important and powerful concept. Most research in this domain is being conducted in design of cognitive radios and on specific PHY and MAC layer challenges associated with them. However, for a dynamic spectrum sharing architecture to...
- White papers 2006-10-23
- An Alternative QoS Architecture for the IEEE 802.16 Standard
- The IEEE 802.16 Standard is a technology proposed to offer wireless access to network stations in a metropolitan area environment. These networks are designed to operate at high data rates and to deal with several applications, resulting in different types of traffic profiles and demands. Therefore, the system is required...
- White papers 2006-10-18
- Challenges for 10Gb/s Implementation on UTP Media
- Responding to the need for 10Gb/s data rates, the industry and IEEE have recently concluded several years of work to create a standard for 10Gb/s optical Ethernet. This standard, however, does not incorporate any option for copper media for LANs-all options involve fiber-optic media. The higher costs of fiber-based solutions...
- White papers 2006-10-12
- Tivo and GPL: Beauty and the Beast?
- Tivo and GPL: Beauty and the Beast?Number of places where GPL might prove to be a pain!Take Wireless Network Card Drivers for example. If the source code for the Lower MAC/PHY layer were to be released, the havoc that can be played on the WiFi community will be immeasurable. Imagine...
- Discussion threads 2006-10-02
- Experimental Evaluation of Application Performance With 802.11 PHY Rate Adaptation Mechanisms in Diverse Environments
- This paper examines the impact of physical layer rate adaptation mechanisms on the performance of real applications over 802.11 wireless links in diverse channel environments. The evaluations are based on a testbed with real wireless devices equipped with commodity 802.11 hardware and a hardware channel emulator. The paper considers two...
- White papers 2006-08-18
- The Power Line Transmission Characteristics for an OFDM Signal
- This paper measures what influence the sinusoidal transmission characteristics of the electric power line with various forms gave to the transmission characteristic of OFDM Orthogonal Frequency Division Multiplexing signal through PLC Power Line Communication System modem. The electric power line transmission line with various forms in a real environment is...
- White papers 2006-05-26
- An Analysis of the Design and Implementation of QoS Over IEEE 802.16
- This paper gives an overview of the QoS mechanisms built into the IEEE 802.16 standard (also known by the name of its vendor interoperability organization, WiMAX). The PHY and MAC layers of 802.16 are described in detail with regards to their QoS aspects. And the relations and interactions of these...
- White papers 2006-05-09
- A Cross-Layer Scheduling Algorithm With QoS Support in Wireless Networks
- Scheduling plays an important role in providing Quality of Service QoS support to multimedia communications in various kinds of wireless networks, including cellular networks, mobile ad hoc networks, and wireless sensor networks. The authors propose a scheduling algorithm at the Medium Access Control MAC layer for multiple connections with diverse...
- White papers 2006-05-01
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