低通滤波FM/MSK中信噪比的损失

MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's Pub Date : 1986-10-01 DOI:10.1109/MILCOM.1986.4805841

F. Amoroso

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引用次数: 1

摘要

在直接序列伪噪声(DSPN)扩频链路中，采用最小移位键控(MSK)调制方法，在载波包络不变的情况下实现良好的频谱遏制。这里的频谱遏制是由直接调频调制与低通滤波芯片流改善。码间干扰导致的信噪比(SNR)损失与改进的频谱特性相交换。

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Loss of SNR in Low Pass Filtered FM/MSK

In a direct sequence pseudonoise (DSPN) spread spectrum link the minimum shift keying (MSK) modulation method is used to achieve good spectral containment with constant carrier envelope. Here the spectral containment is improved by direct FM modulation with a low pass filtered chip stream. The resulting loss of signal-to-noise ratio (SNR) from intersymbol interference is traded against improved spectral characteristics.

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MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's

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