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A New Approach to Multiple Antenna Systems

机译:多天线系统的新方法

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摘要

Using an isomorphism between the multiuser detection problem and transmission of information over MIMO channels coupled to recent results on optimal signature waveform construction, we provide a new approach to information transfer in multiple antenna systems. The approach is based on a multi-carrier modulation scheme at each transmit antenna with sinusoids as carriers, which leads to a matrix model of the MIMO channel. A set of bits is transmitted over the MIMO channel in parallel by assigning different codewords to each bit in the set similar to the way codewords are assigned to different users in a CDMA system. Optimal codewords can be obtained by application of interference avoidance methods, and the corresponding optimal linear receiver structure is a set of matched filters. An analysis of the MIMO channel is performed using singular value decomposition and the dimensionality of the problem is reduced only to those dimensions of the signal space that actually carry information.
机译:利用多用户检测问题和MIMO信道上的信息传输之间的同构性,再加上关于最佳签名波形构造的最新结果,我们提供了一种在多天线系统中进行信息传输的新方法。该方法基于在以正弦波作为载波的每个发射天线处的多载波调制方案,这导致了MIMO信道的矩阵模型。通过将不同的码字分配给集合中的每个位,可以在MIMO信道上并行发送一组位,类似于在CDMA系统中将码字分配给不同用户的方式。可以通过应用干扰避免方法来获得最佳码字,并且相应的最佳线性接收机结构是一组匹配滤波器。使用奇异值分解对MIMO信道进行分析,问题的维数仅减小到实际承载信息的信号空间的维数。

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