Efficient design of anti-jamming rateless coding in cognitive OFDM |
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Authors: | Xiaorong Xu Jianwu Zhang Baoyu Zheng Junrong Yan |
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Affiliation: | (1) Department of Electrical and Computer Engineering, Rice University, 77005 Houston, TX, USA |
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Abstract: | Efficient anti-jamming rateless coding based on cognitive Orthogonal Frequency Division Multiplexing (OFDM) modulation in
Cognitive Radio Network (CRN) is mainly discussed. Rateless coding with small redundancy and low complexity is presented,
and the optimal design methods of building rateless codes are also proposed. In CRN, anti-jamming rateless coding could recover
the lost packets in parallel channels of cognitive OFDM, thus it protects Secondary Users (SUs) from the interference by Primary
Users (PUs) efficiently. Frame Error Rate (FER) and throughput performance of SU employing anti-jamming rateless coding are
analyzed in detail. Performance comparison between rateless coding and piecewise coding are also presented. It is shown that,
anti-jamming rateless coding provides low FER and Word Error Rate (WER) performance with uniform sub-channel selection. Meanwhile,
it is also verified that, in higher jamming rate and longer code redundancy scenario, rateless coding method could achieve
better FER and throughput performance than another anti-jamming coding schemes. |
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