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Taehoon Kwon, Sungmook Lim, Woohyun Seo and Daesik Hong, "LLR-based Symbol Selective Transmission with a Near-optimal Threshold to Minimize BEP for Demodulation-forward Relay Systems", IEEE Trans. Wireless Commun., Feb 2010
[IEEE Trans. Wireless Commun.]
조회 70965
Status : | Published |
---|---|
Date : | 2010-02 |
Title : | LLR-based Symbol Selective Transmission with a Near-optimal Threshold to Minimize BEP for Demodulation-forward Relay Systems |
Authors : | Taehoon Kwon, Sungmook Lim, Woohyun Seo, and Daesik Hong |
Journal : | IEEE Transactions on Wireless Communications |
Abstract : | Error propagation in the source-relay link limits the performance of demodulation-forward (MF) relay systems. In order to solve this problem and efficiently exploit the relay, we propose log likelihood ratio (LLR)-based symbol selective transmission with a near-optimum threshold to minimize the bit error probability (BEP). In the proposed scheme, the source information is forwarded by the relay only if it is likely to be detected correctly, as determined by a comparison of the LLR with the near-optimum threshold. To derive the near-optimum threshold, the BEP of the proposed scheme is analyzed in the case of binary phase shift keying (BPSK) signals. Simulation results confirm the accuracy of the analysis and prove that the proposed scheme efficiently mitigates error propagation. |
URL : | http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5403532 |
Download : | http://mirinae.yonsei.ac.kr/?module=file...a622ad961d |
Taehoon Kwon; Sungmook Lim; Woohyun Seo; Daesik Hong; , "LLR-based symbol selective transmission with a near-optimal threshold to minimize BEP for demodulation-forward relay systems," Wireless Communications, IEEE Transactions on , vol.9, no.2, pp.540-545, February 2010
doi: 10.1109/TWC.2010.02.090248
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5403532&isnumber=5403520
doi: 10.1109/TWC.2010.02.090248
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5403532&isnumber=5403520
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