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Taeyoon Kim, Daeki Hong, Changeon Kang, and Daesik Hong, "Adaptive Pipelined Successive Interference Cancellation for a DS/CDMA System", IEEE ICC Jun. 2000
[IEEE ICC]
조회 77686
Status : | Presented |
---|---|
Date : | 2000-06 |
Title : | Adaptive Pipelined Successive Interference Cancellation for a DS/CDMA System |
Authors : | Taeyoon Kim, Daeki Hong, Changeon Kang, and Daesik Hong |
Conference : | IEEE International Conference on Communications |
Abstract : | We consider the use of an adaptive sigmoid function for a pipelined successive interference cancellation (PSIC) in a direct sequence/code multiple access system (DS/CDMA). The PSIC is a pipelined modification of a successive interference cancellation (SIC). To compensate the decoding delay of the SIC, the PSIC was proposed. Because the decision variable of the latter stage is more reliable than that of the early stage in the PSIC, the wrong derision of the early stage affects the decision of the final stage. So, we use a tentative decision function, which is adjusted depending on the variance of the multiple access interference (MAI). The analysis and computer simulation results of the adaptive PSIC (ADP-SIC) show that the ADP-SIC outperforms both of the SIC and the PSIC with almost same decoding delay estimating a coarse frequency offset is analyzed and the coherence phase bandwidth according to the allowed symbol timing offset is introduced. In addition, a new technique for performing the coarse frequency estimation using the coherence phase bandwidth is described. Simulation results show that the proposed algorithm estimates a coarse frequency offset well under both AWGN and multipath channels even in the presence of the symbol timing offset within an allowed range |
URL : | http://ieeexplore.ieee.org/xpl/articleDe...ber=853597 |
Taeyoon Kim; Daeki Hong; Changeon Kang; Daesik Hong; , "Adaptive pipelined successive interference cancellation for a DS/CDMA system," Communications, 2000. ICC 2000. 2000 IEEE International Conference on , vol.2, no., pp.740-743 vol.2, 2000
doi: 10.1109/ICC.2000.853597URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=853597&isnumber=18540
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