Sökning: "GSM decoder"

Hittade 3 uppsatser innehållade orden GSM decoder.

  1. 1. Evaluation of Word Length Effects on Multistandard Soft Decision Viterbi Decoding

    Master-uppsats, Elektroniksystem

    Författare :Ahmed Salim; [2011]
    Nyckelord :Soft-Decision Viterbi; Tail-biting; Zero-tail; Direct Trace-back; Word Length effects; floating point quantization; BER analysis;

    Sammanfattning : There have been proposals of many parity inducing techniques like Forward ErrorCorrection (FEC) which try to cope the problem of channel induced errors to alarge extent if not completely eradicate. The convolutional codes have been widelyidentified to be very efficient among the known channel coding techniques. LÄS MER

  3. 2. Voice Codec for Floating Point Processor

    Uppsats för yrkesexamina på avancerad nivå, Institutionen för systemteknik

    Författare :Johan Ross; Hans Engström; [2008]
    Nyckelord :Voice codec; floating point; GSM decoder; low precision codec; speech coding;

    Sammanfattning : As part of an ongoing project at the department of electrical engineering, ISY, at Linköping University, a voice decoder using floating point formats has been the focus of this master thesis. Previous work has been done developing an mp3-decoder using the floating point formats. All is expected to be implemented on a single DSP. LÄS MER

  4. 3. Design and implementation of test a tool for the GSM traffic channel.

    Uppsats för yrkesexamina på grundnivå, Institutionen för systemteknik

    Författare :Theo Öjerteg; [2002]
    Nyckelord :Datorteknik; GSM; speech codec; traffic generation; test tool; test automation; DSP; telecommunication; TSS; encoder; decoder; Datorteknik;

    Sammanfattning : Todays’ systems for telecommunication are getting more and more complex. Automatic testing is required to guarantee quality of the systems produced. An actual example is the introduction of GPRS traffic in the GSM network nodes. This thesis investigates the need and demands for such an automatic testing of the traffic channels in the GSM system. LÄS MER