Integer-Forcing architectures for MIMO: Distributed implementation and SIC
Integer-Forcing architectures for MIMO: Distributed implementation and SIC
复制标题
MIMO 的整数强制架构：分布式实施和 SIC
DOI：
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发表时间：
2010
期刊：
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通讯作者：
M. Gastpar
中科院分区：
文献类型：
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作者：
Jiening Zhan;B. Nazer;Or Ordentlich;U. Erez;M. Gastpar
由于易于实现，线性接收机经常用于多天线系统中。然而，与最优联合最大似然(ML)接收机相比，传统的线性接收机，如解调和线性最小均方误差(MMSE)接收机，往往会有显著的性能损失。在以前的工作中，我们提出了整数强迫线性接收机，它以额外的信号处理为代价弥合了传统线性接收机和联合最大似然接收机之间的速率差距。在这篇文章中，我们研究了一种整数强制结构的分布式实现，其中消除了前端线性接收器。这降低了接收器侧的信号处理复杂性，并允许在MIMO系统中进行分布。我们的结果表明，虽然这种分布性确实是以性能为代价的，但与传统的线性结构相比，强制整数结构仍然获得了速率和分集增益。我们还提出了在整数强迫线性接收机中使用连续干扰消除(SIC)。
Linear receivers are often used in multiple-antenna systems due to ease of implementation. However, traditional linear receivers such as the Decorrelator and the linear minimum-mean squared error (MMSE) receiver often have a significant performance loss compared to the optimal joint maximum likelihood (ML) receiver. In previous work, we proposed the Integer-Forcing linear receiver, which bridges the rate gap between traditional linear receivers and the joint ML receiver at the cost of some additional signal processing. In this paper, we examine a distributed implementation of the Integer-Forcing architecture where the front-end linear receiver is eliminated. This reduces the signal processing complexity at the receiver side and allows for distribution in the MIMO system. Our results show that although this distributedness does come at a price in performance, the Integer-Forcing architecture still achieves both rate and diversity gains over traditional linear architectures. We also propose the use of Successive Interference Cancellation (SIC) in the Integer-Forcing Linear Receiver.