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

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

2010-12-21

arxiv.org/abs/1012.4556v1

Computer Science

Networking and Internet Architecture

6 pages, 5 figures

Scientific paper

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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