频偏对脉冲成型多载波系统性能的影响分析
doi: 10.3724/SP.J.1146.2008.01443
Effects of Frequency Offset on System Performance of Pulse Shaping Multicarrier System
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摘要: 该文提出了一种基于脉冲成型多载波系统中频偏对系统性能影响的分析方法。该方法首先把解调后的输出分为信号及频偏带来的ICI和ISI干扰，然后基于发送和接收成型脉冲的互模糊函数给出了信号和干扰的量化分析，最后利用发送信号的统计特性得到解调后输出的信干比。仿真结果表明，频偏带来的系统误码率和理论计算的信干比是一致的，从而验证了该方法的有效性。Abstract: In this paper, An analysis method of effects of frequency offset on the property of pulse shaping multicarrier system is presented. The method first divides demodulator output into signals and interference, and then based on the cross-ambiguity function of transmit pulse and receive pulse, obtaines the quantitative analysis of signal and interference, finally calculates the SIR with the utilization of statistical properties of the transmit data. Simulation results show that BER caused by frequency synchronization error is consistent with theoretical calculation of the SIR. Therefore, the reliability of the method is verified.
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