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MIMO Interference Channel Between Spatial Multiplexing and Spatial Modulation

机译:空间复用与空间调制之间的MIMO干扰信道

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摘要

In this paper, two major multiple-input-multiple-output (MIMO) transmission techniques such as spatial modulation (SM) and spatial multiplexing (SMX) are considered. In particular, the focus is on an interference scenario, where an SM MIMO system interferes with a conventional SMX MIMO system. The interference caused by SM has a peculiar behavior. In SMX MIMO networks, the interference subspace is fixed in a given coherence time interval. It can be estimated accurately, and interference suppression techniques can be applied accordingly. However, the interference caused by an SM system has no fixed interference subspace, and it changes in every single channel use. Therefore, SM interference could pose some unique challenges to SMX MIMO systems in some scenarios. In this paper, the effect of SM interference on SMX MIMO systems and methods to overcome/reduce the adverse effects caused by SM interference are studied. Furthermore, the effect of SMX interference on SM MIMO systems is also studied.
机译:在本文中,考虑了两种主要的多输入多输出(MIMO)传输技术,例如空间调制(SM)和空间多路复用(SMX)。特别地,重点在于干扰情形,其中SM MIMO系统干扰传统的SMX MIMO系统。 SM引起的干扰具有特殊的行为。在SMX MIMO网络中,干扰子空间在给定的相干时间间隔内固定。可以准确地估计它,并且可以相应地应用干扰抑制技术。但是,由SM系统引起的干扰没有固定的干扰子空间,并且在每次使用单个信道时都会发生变化。因此,在某些情况下,SM干扰可能会对SMX MIMO系统提出一些独特的挑战。本文研究了SM干扰对SMX MIMO系统的影响以及克服/减少SM干扰造成的不利影响的方法。此外,还研究了SMX干扰对SM MIMO系统的影响。

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