具有多芯片波形的多载波DS-CDMA系统

Eighth IEEE International Symposium on Spread Spectrum Techniques and Applications - Programme and Book of Abstracts (IEEE Cat. No.04TH8738) Pub Date : 2004-08-30 DOI:10.1109/ISSSTA.2004.1371786

S. Sureshkumar, E. Shwedyk, H. Nguyen

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引用次数: 0

摘要

研究了带宽受限的多芯片波形对异步多载波直接顺序码分多址(MC-DS-CDMA)系统下行链路性能的影响。性能标准是匹配滤波器接收机输出端的平均多址干扰(MAI)。假设一个加性高斯白噪声信道。结果表明，当载波间距c = 1/(1 + /spl beta/)时，对所有载波使用相同的芯片波形可以使MAI最小化，即不需要为不同的载波分配不同的芯片波形。

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Multicarrier DS-CDMA systems with multiple chip waveforms

The influence of bandlimited multiple chip waveforms on the performance of asynchronous, multicarrier, direct sequence code-division multiple access (MC-DS-CDMA) systems is investigated for the downlink. The performance criterion is the average multiple access interference (MAI) at the output of a matched filter receiver. An additive white Gaussian noise channel is assumed. It is demonstrated that for carrier spacing c = 1/(1 + /spl beta/), using the same chip waveform for all the carriers, minimizes the MAI, i.e, there is no need to assign different chip waveforms to different carriers.

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Eighth IEEE International Symposium on Spread Spectrum Techniques and Applications - Programme and Book of Abstracts (IEEE Cat. No.04TH8738)

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