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    ASIA unversity > 資訊學院 > 光電與通訊學系 > 期刊論文 >  Item 310904400/17041


    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/17041


    Title: Performance of FH/MFSK Systems with Readable Erasures
    Authors: 王居尉;Wang, Jyu-Wei
    Contributors: 光電與通訊學系
    Keywords: Frequency hopping (FH);Readable erasure;M-ary frequency shift keying (MFSK);Channel side information
    Date: 2007-05
    Issue Date: 2012-11-26 10:21:07 (UTC+8)
    Abstract: We propose a readable-erasure channel for frequency-hopping spread-spectrum multiple access systems with MFSK modulation scheme (FH/MFSK). In contrast to the conventional erasure-only channel having M + 1 output symbols, the proposed readable-erasure channel has 2M output symbols. Half of the symbols are related to hit-free transmissions, and the rest of the symbols, referred to as weak symbols, are related to transmissions that were hit. The essence of the readable erasure is in the information hidden inside it. One may explore such information by using channel coding. Our analysis shows that in conjunction with channel coding, the readable-erasure channel may enjoy performance advantage over the erasure-only channel. By taking the spectrum efficiency into consideration, we point out that using RS codes over large channel alphabet size in FH/MFSK systems is inefficient. Thus, for FH/MFSK systems, we suggest BCH codes over GF(4) for use with the readable-erasure channel.
    Relation: Computer Communications;30(7):1538–1545
    Appears in Collections:[光電與通訊學系] 期刊論文

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