Performance analysis of 49-QPRS through nonlinear satellite channel in the presence of additive white Gaussian noise

Proceedings of the Fifteenth National Radio Science Conference. NRSC '98 (Cat. No.98EX109) Pub Date : 1998-02-24 DOI:10.1109/NRSC.1998.711490

M. I. Badr, R. El-Zanfally

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引用次数: 7

Abstract

This paper is concerned with the analytical performance analysis and evaluation of 49-ary quadrature partial response signaling (QPRS) when transmitted through a nonlinear satellite channel in the presence of additive white Gaussian noise (AWGN) in both the uplink and downlink channels. The main source of the nonlinearity is the traveling wave tube amplifier (TWTA) on-board the satellite. The transponder nonlinearities considered in this paper are due to: input amplitude-output amplitude conversion (AM/AM) and input amplitude-output phase conversion (AM/PM). The results are determined in terms of the dependence of average symbol error probability (Pe) upon the uplink and downlink signal-to-noise ratios (SNR) at different values of input back-off (BO) from saturation operation of the TWTA. Finally, the results showed that the appropriate values of the threshold levels and compensation phases at the receiver are highly correlated and can only be arrived at by minimizing the average symbol error probabilities.

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加性高斯白噪声下49-QPRS非线性卫星信道性能分析

本文研究了在非线性卫星信道中，在上行和下行信道均存在加性高斯白噪声(AWGN)的情况下，49元正交部分响应信令(QPRS)的解析性能分析和评价。非线性的主要来源是星载行波管放大器(TWTA)。本文考虑的转发器非线性是由于:输入幅值-输出幅值转换(AM/AM)和输入幅值-输出相位转换(AM/PM)。在TWTA饱和运行的不同输入回退(BO)值下，平均符号错误概率(Pe)与上行和下行信噪比(SNR)的依赖关系决定了结果。最后，结果表明，接收端阈值电平和补偿相位的适当值是高度相关的，只能通过最小化平均符号错误概率来获得。

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 Fifteenth National Radio Science Conference. NRSC '98 (Cat. No.98EX109)

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