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    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/9503


    Title: On the performance of frequency-hopped spread-spectrum systems utilizing near-orthogonal hopping patterns
    Authors: Jyu-Wei Wang
    Date: 1998-11
    Issue Date: 2010-05-12 09:11:40 (UTC+8)
    Publisher: Asia University
    Abstract: A simple near-orthogonal code is used as frequency-hopping patterns for the frequency-hopped multiple access systems. Extended RS code is used as channel coding to deplete the effects of hits from simultaneous users. Packet error probability and channel throughput for the system utilizing the near-orthogonal code are evaluated and compared to the corresponding values obtained from the system utilizing random patterns. Results show that the former can provide substantial improvement over the latter. In our illustrated examples, we also show that under the constraint of packet error probability P_E≦10^<-2>, the maximum achievable number of users with most (n, k) RS codes of interest is less than the number of distinct codewords in the near-orthogonal code. Thus, the number of codewords of the near-orthogonal code is large enough to support the practical application.
    Relation: IEICE transactions on communications E81-B(11): 2191-2196
    Appears in Collections:[光電與通訊學系] 期刊論文

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