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    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/9501

    Title: Performance of FH/MFSK systems for speech with activity detector over Rayleigh fading channels
    Authors: Jyu-Wei Wang
    Date: 1998-10
    Issue Date: 2010-05-12 09:11:39 (UTC+8)
    Publisher: Asia University
    Abstract: This paper presents the performance of FH/MFSK systems, which exploit silent gaps in speech to accommodate more users, over Rayleigh fading channels. Two kinds of receivers are considered: one uses a threshold on the received signal strength to declare whether the signals were present or not, and the other is assumed to have perfect transmitter-state information obtained from using additional bandwidth. Results show that, if the codeword dropping and codeword error are assumed to be equally costly, the former can achieve slightly better performance than the latter in the decoding error probability. This finding suggests that, for the system to exploit silent gaps in speech, it is advantageous for the receiver to use a threshold to declare whether signals were present or not instead of relying on the transmitter-state information.
    Relation: IEICE transactions on fundamentals of electronics, communications and computer sciences E81-A(10): 2101-2108
    Appears in Collections:[光電與通訊學系] 期刊論文

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