基于ENCAP-4/sup N/数字调制的接收机设计与性能评估

Proceedings. Electrotechnical Conference Integrating Research, Industry and Education in Energy and Communication Engineering', Pub Date : 1989-04-11 DOI:10.1109/MELCON.1989.50078

A. Gusmão, N. Esteves

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引用次数: 0

摘要

作者研究了编码幅相(ENCAP)偏置正交相移键控(OQPSK)信号在qpsk型(msk型)接收机和Viterbi接收机的帮助下的相干检测。给出了并联和串行oqpsk型接收机以及匹配和不匹配Viterbi接收机性能的数值结果。在获得紧凑光谱的某些情况下，事实证明，oqpsk型接收器几乎与最佳维特比接收器一样高效，尽管前者更简单。至于对同步误差的敏感性，Viterbi接收器即使完全匹配，也不明显优于oqpsk型接收器。

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Receiver design and performance evaluation with ENCAP-4/sup N/ digital modulation

The authors examine the coherent detection of ENCoded-Amplitude-and-Phase (ENCAP) offset quadrature phase shift keying (OQPSK) signals with the help of both QPSK-type (MSK-type) receivers and Viterbi receivers. Numerical results are presented on the performance of parallel and serial OQPSK-type receivers as well as matched and mismatched Viterbi receivers. In some cases where compact spectra are obtained, it turns out that the OQPSK-type receivers are nearly as efficient as the optimal Viterbi receivers, even though the former are much simpler. As for sensitivity to synchronization errors, the Viterbi receivers, even if perfectly matched, are not clearly superior to the OQPSK-type receivers.<>

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Proceedings. Electrotechnical Conference Integrating Research, Industry and Education in Energy and Communication Engineering',

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