Accurate evaluation of multiple-access performance in TH-PPM and TH-BPSK UWB systems

被引：130

作者：

Hu, B ^{[1
]}

Beaulieu, NC ^{[1
]}

机构：

[1] Univ Alberta, iCORE, Wireless Commun Lab, Dept Elect & Comp Engn, Edmonton, AB T6G 2V4, Canada

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 2004年 / 52卷 / 10期

关键词：

error analysis; multiaccess communication; timehopping (TH); ultra-wideband (UWB); wireless;

D O I：

10.1109/TCOMM.2004.836424

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A characteristic function method is proposed for precisely calculating the bit-error probability of time-hopping (TH) ultra-wideband (UWB) systems with multiple-access interference in an additive white Gaussian noise environment. The analytical expressions are validated by simulation and used to assess the accuracy of the Gaussian approximation. The Gaussian approximation is shown to be inaccurate for predicting bit-error rates (BERs) for medium and large signal-to-noise ratio (SNR) values. The performances of TH pulse position modulation (PPM) and binary phase-shift keying (BPSK) modulation schemes are accurately compared in terms of the BER. It is shown that the BPSK system outperforms the binary PPM system for all values of SNR. The sensitivity of the performance of the modulation schemes to the system parameters is also addressed through numerical examples.

引用

页码：1758 / 1766

页数：9

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