Compared performances of trellis coded QDPSK modulation and CPFSK modulation with discrimination detection

Proceedings of the IEEE 1991 National Aerospace and Electronics Conference NAECON 1991 Pub Date : 1991-05-20 DOI:10.1109/NAECON.1991.165791

G. Prescott, J. M. Bargallo

引用次数: 0

Abstract

The performance of a trellis coded four phase differential phase shift keying (TC QDPSK) modem with symbol decoding is compared with a continuous phase frequency shift keying (CPFSK) modem using noncoherent detection. The bit error rate (BER) performance as a function of signal-to-noise ratio per bit is obtained by simulation of both systems. It is shown that the trellis coded system provides a better BER performance for a given signal-to-noise ratio per bit. The bandwidth requirements for both systems are analyzed and compared. The TC 4DPSK system trades off part of the maximum achievable coding gain for a simpler implementation.<>

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比较了栅格编码QDPSK调制和带鉴别检测的CPFSK调制的性能

比较了采用符号解码的栅格编码四相差分移相键控(TC QDPSK)调制解调器与采用非相干检测的连续移相键控(CPFSK)调制解调器的性能。通过对两种系统的仿真，得到了误码率(BER)性能随每比特信噪比的变化规律。结果表明，在一定的信噪比下，栅格编码系统具有较好的误码率性能。对两种系统的带宽需求进行了分析和比较。tc4dpsk系统为了更简单的实现而牺牲了最大可实现编码增益的一部分。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the IEEE 1991 National Aerospace and Electronics Conference NAECON 1991

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