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首页> 外文期刊>Wireless Communications Letters, IEEE >Iterative Block Fractionally Spaced Nonlinear Equalization for Wideband Channels
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Iterative Block Fractionally Spaced Nonlinear Equalization for Wideband Channels

机译：宽带信道的迭代块分数间隔非线性均衡

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摘要

For a transmission over frequency-selective channels, we propose a fractionally spaced (FS) iterative block decision feedback equalizer (FS-IBDFE) receiver that combines the advantages of FS equalization, nonlinear processing, and frequency-domain (FD) implementation. The contributions of the letter are as follows: 1) the extension of existing FD iterative equalization schemes considering an FS processing; 2) the design of the FD equalizer coefficients minimizing the mean square error at the detection point; and 3) a simple equalizer design procedure where equalization coefficients are computed in closed form, without matrix inversions. As an example, the performance of the proposed scheme is assessed in a Rayleigh fading channel, and it is seen that the FS-IBDFE significantly outperforms the FS linear equalizer, the non-FS IBDFE, and the noise prediction FS FD equalizer.
机译：对于在频率选择信道上的传输，我们提出了分数间隔（FS）迭代块决策反馈均衡器（FS-IBDFE）接收器，该接收器结合了FS均衡，非线性处理和频域（FD）实现的优点。这封信的贡献如下：1）考虑FS处理的现有FD迭代均衡方案的扩展； 2）FD均衡器系数的设计使检测点的均方误差最小； 3）一个简单的均衡器设计程序，其中均衡系数以封闭形式计算，而无需矩阵求逆。例如，在瑞利衰落信道中评估了所提出方案的性能，并且可以看出FS-IBDFE明显优于FS线性均衡器，非FS IBDFE和噪声预测FS FD均衡器。

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