一种新型MBOK直接序列超宽带无线电决策反馈接收机

2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications Pub Date : 2006-07-02 DOI:10.1109/SPAWC.2006.346369

Jeng-Kuang Hwang, Yu-Lun Chiu, R. Chung

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引用次数: 2

摘要

提出了一种用于双正交键控(MBOK)直接序列超宽带无线电(DS-UWB)的高性能、计算效率高的决策反馈接收机。首先，建立了UWB信道在多个连续符号上色散的矢量矩阵信号模型。然后，通过对基准MBOK-RAKE接收机进行改进，提出了一种具有双向决策反馈的新型RAKE接收机(RAKE- bddf)，以有效地消除光标后和光标前的码间干扰(ISI)和多码干扰(MCI)。给出了802.15.3a CM2和CM4 UWB信道的仿真结果。可以看出，RAKE- bddf接收器可以获得接近匹配滤波器边界的性能，而接收器的复杂度仅比RAKE接收器略有增加

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A Novel Decision-Feedback Receiver for MBOK Direct Sequence Ultra-Wideband Radio

A high performance and computation efficient decision-feedback receiver for M-ary bi-orthogonal keying (MBOK) direct-sequence ultra-wideband radio (DS-UWB) is proposed. First, an insightful vector-matrix signal model for UWB channel dispersion over many consecutive symbols is built up. Then, by modifying a baseline MBOK-RAKE receiver, we propose a novel RAKE with bidirectional decision feedback (RAKE-BDDF) receiver to efficiently cancel both the post-cursor and pre-cursor intersymbol interference (ISI) and multi-code interference (MCI) at symbol rate. Simulation results are included for 802.15.3a CM2 and CM4 UWB channels. It is seen that the RAKE-BDDF receiver can attain a performance close to the matched filter bound, with only a slight increase in the receiver complexity than that of the RAKE receiver

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来源期刊

2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications

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