时钟和载波相位漂移对直接序列扩频多址系统性能的影响

Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 1989-06-01 DOI:10.1109/PACRIM.1989.48319

E. Sousa

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引用次数: 0

摘要

讨论了一种直接序列扩频多址网络。在这种网络中，符号错误的概率取决于干扰终端相对于感兴趣的信号的载波和扩频码芯片相位。因此，对于给定的总干扰功率，与多址干扰的高斯假设成立的许多弱干扰相比，在一个强干扰的情况下，性能更差。结果表明，如果在信号的载波频率和扩频码频率之间存在偏移，那么一组平衡干扰和一组不平衡干扰之间的性能差异将大大减小。

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The effect of clock and carrier phase drifts on the performance of a direct sequence spread spectrum multiple-access system

A direct-sequence spread-spectrum multiple-access network is discussed. The probability of symbol error in such a network is dependent on the carrier and spreading code chip phases of the interfering terminals with respect to the signal of interest. As a result, for a given total interference power the performance is worse for the case of one strong interferer when compared to the case of many weak interferers where the Gaussian assumption on the multiple-access interference holds. It is shown that if there is an offset between the carrier and spreading code frequencies of the signals, then the difference in performance between the cases of a set of balanced and a set of unbalanced interferers is drastically reduced.<>

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Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing

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