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Selective Multipath Interference Canceller with Linear Equalization for DS-UWB Systems with Low Spreading Factor

2010/12/21 by Chunhua Geng, Geng, Chunhua, Yukui Pei +3
Computer Science · Engineering · #Antenna Design and Analysis #FOS: Computer and information sciences #Full-Duplex Wireless Communications #Networking and Internet Architecture (cs.NI) #Ultra-Wideband Communications Technology #cs.NI

paper · pdf · doi:10.48550/arxiv.1012.4556

6 pages, 5 figures

arxiv created 2010/12/21 · openalex publication_date 2010/12/21 · arxiv updated 2010/12/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In high rate DS-UWB systems with low spreading factor, the selective multipath interference canceller with linear equalization (SMPIC-LE) is developed to alleviate severe multipath interferences induced by the poor orthogonality of spreading codes. The SMPIC iteratively mitigates the strongest inter-path interference, inter-chip interference and inter-symbol interference, while the former two are unresolvable in conventional RAKE-decision feedback equalizer (DFE) receivers. The numerical results and complexity analysis demonstrate that SMPIC-LE with proper parameters provides an attractive overall advantage in performance and computational complexity compared with RAKE-DFE. In addition, it approaches the matched filter bound well as the RAKE finger in SMPIC increases.

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