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首页> 外文会议>Annual Allerton Conference on Communication, Control, and Computing; 20040929-1001; Monticello,IL(US) >Evaluation of Union Bounds for BICM on fading channels with Multiple Antennas
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Evaluation of Union Bounds for BICM on fading channels with Multiple Antennas

机译：多天线衰落信道上BICM联合边界的评估

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摘要

For higher order modulation systems, union bound evaluation involves the exhaustive computation of all the pairwise symbol vector error probabilities and mapping them to the input bit errors. The performance is usually approximated by a few dominant error events which is applicable to AWGN channels. Suggested approaches consider infinite depth interleaving to obtain a simplified memoryless bit-channel model. Numerical results based on this approach can be found in [5] for convolutional codes. However, multiple antennas allow us to obtain very good performance with higher order modulation and relatively smaller block sizes. The assumption of asymptotically large coding length cannot be applied to this scenario. On the other hand, concatenated codes employ a finite interleaver and our approach can be employed in the analysis of such codes. The performance of serial concatenated codes with BPSK over an AWGN channel was evaluated in [3]. The approach was extended to independent fading channels. In this paper, we present a general approach for performance of higher order modulated BICM systems on fading channels with multiple antennas, which assumes an ideal model for the modulator and develops a new error event description. The application of our analytical model is demonstrated with examples and simulations.
机译：对于高阶调制系统，并集边界评估涉及所有成对符号矢量错误概率的详尽计算，并将它们映射到输入误码。通常，通过一些适用于AWGN信道的主要错误事件来估计性能。建议的方法考虑无限深度交织以获得简化的无记忆位信道模型。基于这种方法的数值结果可以在[5]中找到卷积码。但是，多天线允许我们以更高阶的调制和相对较小的块大小获得非常好的性能。渐近编码长度的假设不能应用于这种情况。另一方面，级联码采用有限交织器，我们的方法可用于此类码的分析。在[3]中评估了在AWGN信道上使用BPSK进行串行级联代码的性能。该方法扩展到独立的衰落信道。在本文中，我们提出了一种在具有多个天线的衰落信道上提高高阶调制BICM系统性能的通用方法，该方法假定了调制器的理想模型并开发了新的错误事件描述。通过实例和仿真演示了我们的分析模型的应用。

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