A BICM-IDD scheme for non-coherent MIMO communication
A BICM-IDD scheme for non-coherent MIMO communication
复制标题
非相干MIMO通信的BICM-IDD方案
DOI：
10.1109/twc.2009.070887
复制
发表时间：
2009
影响因子：
10.4
通讯作者：
T. Davidson
中科院分区：
文献类型：
--
作者：
Mohamed A. El;R. Gohary;T. Davidson
针对多输入多输出（MIMO）信道中的非相干通信，提出了一种基于迭代（软）解映射和解码（IDD）的比特交织编码调制（BICM）方案。该计划利用基本的格拉斯曼几何的信令方案，接近遍历能力的非相干模型在高信噪比。特别地，这种几何形状引导发射机处的星座图和映射器的构造，并且产生计算高效的基于列表的解映射算法。采用使解码器能够增加解映射列表的方案实际上消除了高效解映射器的轻微性能下降。仿真结果表明，在高数据速率下，该方案可以提供显着优于几个基于训练的BICM-IDD方案的性能。
A bit-interleaved coded modulation (BICM) scheme with iterative (soft) demapping and decoding (IDD) is developed for non-coherent communication over a multiple-input multiple-output (MIMO) channel. The scheme exploits the underlying Grassmannian geometry of the signalling scheme that approaches the ergodic capacity of the non-coherent model at high signal-to-noise ratios. In particular, this geometry guides the construction of the constellation and the mapper at the transmitter, and gives rise to a computationally-efficient list-based demapping algorithm. The incorporation of a scheme that enables the decoder to augment the demapping list virtually eliminates the mild performance degradation of the efficient demapper. Simulation results demonstrate that at high data rates the proposed scheme can provide significantly better performance than several training-based BICM-IDD schemes.