FSK-SS communication system has higher transmission efficiency as compared with direct series spread spectrum (DS-SS) communication system.

与通常的直接序列扩颗通信方式(DS - SS)相比，移频键控多值传送扩颗通信方式(FSK - SS)具有传输效率高的特点。

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This paper discusses the despread of low signal to noise ratio of the direct sequence (DS) spread spectrum signals using intermediate-frequency recirculation summation loop (IFRSL).

本文讨论了用中频积累法实现低信噪比直接序列扩频信号的解扩。

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By exploring the phase information among symbols of the Direct Sequence Spread Spectrum (DS-SS) signal, a novel de-noising approach, used in low signal noise ratio environment, is presented.

利用DS - SS信号符号间相位信息，提出了一种可工作于低信噪比下的直接序列扩谱(DS - SS)信号噪声抑制方法。

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