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arXiv 1303.6880cs.ITmath.IT
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多采样接收机提高维纳相位噪声信道的信息速率

Multi-sample Receivers Increase Information Rates for Wiener Phase Noise Channels

Hassan Ghozlan, Gerhard Kramer

摘要:

波形信道被认为是由维纳相位噪声和加性高斯白噪声(AWGN)损坏的传输信号。介绍了一种基于多采样接收机的离散时间信道模型。通过数值模拟计算了多采样接收机所实现的信息速率的严格下界。结果表明,在高信噪比下,接收机处的过采样对于强相位噪声和弱相位噪声都有利。与使用其他离散时间模型时得到的结果进行了比较。

英文摘要:

A waveform channel is considered where the transmitted signal is corrupted by Wiener phase noise and additive white Gaussian noise (AWGN). A discrete-time channel model is introduced that is based on a multi-sample receiver. Tight lower bounds on the information rates achieved by the multi-sample receiver are computed by means of numerical simulations. The results show that oversampling at the receiver is beneficial for both strong and weak phase noise at high signal-to-noise ratios. The results are compared with results obtained when using other discrete-time models.

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