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24 July 2008

Modulation roundup: error rates, noise, and capacity
The article compares various digital modulation schemes like BPSK, QPSK, PAM, 16PSK, 32PSK, 16QAM and 64QAM using a variety of metrics.Click here for full story
Recent Design Notes
  • Asymmetrical Doherty for 3G base stations
  • Implement a West Bridge for fast-changing mobile architectures
  • 3GPP Long Term Evolution: System Overview, Product Development, and Test Challenges
  • Use microphone arrays for background acoustic noise suppression in portable devices--Part I
  • Tutorial: Tuning the baseband-to-radio connection for wireless basestations

     MORE



  •   Video: CDMA Development Group Says LTE Focus Doesn't Rule Out WiMax
    The CDMA Development Group, at a strategy meeting in Denver, agreed that a focus on Long-Term Evolution doesn't mean interest in WiMax is cooling.  Click here for full story

  • VITA warns of confused board industry, destabilized chip industry
  • Wolfson gets active with echo cancellation
  • Wireless chip shipments on a roll, says analyst
  • OBSAI adds LTE in to basestation standards
  • WiMax, 3G services seen fueling Indian wireless growth

      MORE


  • White power LEDs housed in CLCC-2 ceramic package
    Vishay has claimed the industry's first series of high-intensity white power SMD LEDs in the CLCC-2 flat ceramic package. These white LEDs deliver high optical power from 9000 to 18000 mcd.MORE
    STM delivers handset audio filtering and ESD in flip-chip package
    The EMIF06-AUD01F2 provides superior audio performance in feature-rich mobile phones by eliminating audible handset demodulation noise. MORE

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  • Virtualab

  • Handsets on track for growth despite declining prices
  • Converged nets drive Brocade, Foundry combo
  • Broadcom profit up, revenue beats view
  • Project Galaxy to spend $6 million researching GALS
  • MORE
    Prototype fuel cell for handsets eyes fivefold run-time boost
    As part of a research collaboration on miniaturized energy sources, the French Atomic Energy Agency (CEA) and STMicroelectronics NV (Geneva) have prototyped a hydrogen fuel cell for mobile phones that aims to reduce dependency on the use of electrical power supplies to recharge batteries. EE Times' Anne-Francoise Pele Takes a closer look.Click here to learn more.

    Tech Article Library
    Check out CommsDesign's Design corner to find a detail technical articles on a host of communication design issues. To access the design corner, click here.

    Phyworks demos 10G copper interconnects
    Communications chip specialist Phyworks (Bristol, England) has demonstrated 10Gbits/s rack-to-rack copper interconnects of up to 30 metres using technology it originally developed for the optical module market. EE Times Europe's John Walko gets the story. Click here for details.

    Puzzled by a network processing design issue?

    Join former NPF CEO Colin Mick in discussing net processing design issues by clicking here!


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