脉冲熄灭OFDM接收机性能研究

发布时间：2018-05-04 16:27

本文选题：正交频分复用 + 子载波间干扰　；参考：《中国民航大学》2016年硕士论文

【摘要】：脉冲熄灭是正交频分复用(OFDM)系统最常用的脉冲干扰抑制方法,但脉冲熄灭有效消除脉冲干扰的同时又会产生子载波间干扰(ICI)恶化OFDM链路传输的可靠性。为定量分析脉冲熄灭导致的ICI对OFDM接收机差错性能的影响,论文开展了脉冲熄灭OFDM接收机性能的研究,论文主要研究内容如下:第一,为定量分析脉冲噪声对OFDM接收机差错性能的影响,以伯努利~复高斯脉冲噪声模型为基础,在频率选择性衰落信道分析给出OFDM接收机解调器输出信干噪比计算公式,进一步给出了多进制相移键控(M-PSK)调制和多进制正交幅度调制(M-QAM)调制的OFDM接收机符号差错概率计算公式,最后计算机仿真结果验证了理论分析的正确性。第二,为定量分析脉冲熄灭导致的ICI对单输入单输出(SISO)OFDM接收机差错性能的影响,以伯努利~复高斯脉冲噪声模型为基础,在频率选择性衰落信道分析给出脉冲熄灭SISO-OFDM接收机解调器输出信噪比(SNR)计算公式,进一步给出了脉冲熄灭OFDM接收机符号差错概率计算公式,最后计算机仿真结果验证了理论分析的正确性。第三,将脉冲熄灭OFDM接收机差错性能的理论分析方法推广到最大比值合并(MRC)OFDM系统,空时块编码(STBC)OFDM系统和多输入多输出(MIMO)OFDM系统,定量分析给出频率选择性衰落信道下脉冲熄灭MRC-OFDM接收机,脉冲熄灭STBC-OFDM接收机和脉冲熄灭MIMO-OFDM接收机符号差错性能计算公式,最后计算机仿真结果验证了理论分析的正确性。
[Abstract]:Pulse quenching is the most commonly used pulse interference suppression method in orthogonal frequency division multiplexing (OFDM) systems. However, pulse extinguishment can effectively eliminate pulse interference and at the same time produce intercarrier interference (ICI) to worsen the reliability of OFDM link transmission. In order to quantitatively analyze the effect of ICI caused by pulse quenching on the error performance of OFDM receiver, the performance of OFDM receiver with pulse quenching is studied in this paper. The main contents of this paper are as follows: first, In order to quantitatively analyze the effect of pulse noise on the error performance of OFDM receiver, based on the Bernoulli ~ complex Gao Si pulse noise model, the formula for calculating the signal-to-noise ratio of OFDM receiver demodulator is presented in frequency selective fading channel analysis. Furthermore, the formulas for calculating the symbol error probability of the OFDM receiver for the modulation of the multi-ary phase-shift keying keying (M-PSK) and the M-QAM modulation are given. Finally, the computer simulation results verify the correctness of the theoretical analysis. Secondly, in order to quantitatively analyze the effect of ICI caused by pulse extinguishment on the error performance of SISO OFDM receiver, the Bernoulli complex Gao Si pulse noise model is used as the basis. In the frequency selective fading channel analysis, the formula for calculating the output signal-to-noise ratio (SNR) of the pulse extinguishing SISO-OFDM receiver demodulator is given, and the formula for calculating the symbol error probability of the pulse extinguishing OFDM receiver is given. Finally, the computer simulation results verify the correctness of the theoretical analysis. Thirdly, the theoretical analysis method of the error performance of the pulse extinguishing OFDM receiver is extended to the maximum ratio combined OFDM system, the space-time block coded OFDM system and the multiple-input multiple-output MIMO-OFDM system. The formulas for calculating the symbol error performance of pulse extinguishing MRC-OFDM receiver, pulse extinguishing STBC-OFDM receiver and pulse extinguishing MIMO-OFDM receiver in frequency selective fading channel are given quantitatively. Finally, the correctness of the theoretical analysis is verified by computer simulation results.
【学位授予单位】：中国民航大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN929.53;TN851

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