多径衰落信道的跳频多用户啁啾调制(FH/M-CM)

Proceedings of the Sixteenth National Radio Science Conference. NRSC'99 (IEEE Cat. No.99EX249) Pub Date : 1999-02-23 DOI:10.1109/NRSC.1999.760890

S. El-Khamy, S. Shaaban, E.A. Thabet

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引用次数: 27

摘要

多用户啁啾调制(M-CM)技术是一种利用啁啾调制扩频信号的高效多址技术。为了进一步提高M-CM在多径色散信道中的性能，我们建议将跳频技术应用于M-CM。M-CM复用信号的频带在允许的信道带宽内进行跳频。跳频技术的应用大大提高了M-CM信号在多径衰落色散信道中的性能。所考虑的信道模型是一个广义的信道模型，它允许由于多径传播引起的色散和平等衰落。推导了跳频/M-CM误差概率上界的封闭表达式，并研究了不同信道色散和多址参数情况下的误差概率上界。

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Frequency-hopped multi-user chirp modulation (FH/M-CM) for multipath fading channels

The multi-user chirp modulation (M-CM) technique was introduced previously by the author as an efficient multiple-access technique using chirp modulation spread-spectrum signals. To further improve the performance of M-CM in multipath dispersive channels we suggest the application of frequency hopping (FH) to M-CM. The band of M-CM multiplexed signals is frequency-hopped within the allowed channel bandwidth. The application of FH is shown to highly improve the performance of M-CM signals in multipath fading dispersive channels. The considered channel model is a generalized channel model that allows dispersion and flat fading due to multipath propagation. Closed form expressions for the upper bound on the error probability for FH/M-CM is derived and investigated for different cases of channel dispersion and multiple-access parameters.

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Proceedings of the Sixteenth National Radio Science Conference. NRSC'99 (IEEE Cat. No.99EX249)

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