A novel multiple access scheme based on spatial modulation MIMO

2014 IEEE 19th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD) Pub Date : 2014-12-01 DOI:10.1109/CAMAD.2014.7033251

Xiping Wu, M. Renzo, H. Haas

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引用次数: 9

Abstract

Spatial modulation (SM) is a unique single-stream Multiple-Input Multiple-Output (MIMO) transmission technique. Unlike conventional MIMO schemes, SM activates a single transmit antenna at any time instance, and therefore completely avoids inter-channel interference in single user scenarios. When considering multiple users, precoding techniques can be applied to realise multi-user SM (MU-SM) and coordinate multi-user interference. The transmit antennas in MU-SM are divided into groups, and each group is dedicated to one user. This means that the management and selection of antennas are crucial with respect to capacity in MU-SM. Therefore, we propose a novel multiple access method in this paper, named spatial modulation multiple access (SMMA). Unlike in MU-SM where a fixed antenna arrangement is used, the concept of SMMA is to adaptively allocate the transmit antennas to multiple users. Results show that SMMA obtains a signal-to-noise ratio (SNR) gain of up to 6 dB over MU-SM. More importantly, the performance of SMMA degrades insignificantly as the number of users increases.

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一种新的基于空间调制MIMO的多址方案

空间调制是一种独特的单流多输入多输出(MIMO)传输技术。与传统的MIMO方案不同，SM在任何时间实例激活单个发射天线，因此完全避免了单用户场景下的信道间干扰。在考虑多用户的情况下，可以采用预编码技术实现多用户同步(MU-SM)和协调多用户干扰。MU-SM的发射天线被分成若干组，每组专用于一个用户。这意味着天线的管理和选择对于MU-SM的容量至关重要。因此，本文提出了一种新的多址方法，即空间调制多址(SMMA)。与采用固定天线布置的MU-SM不同，SMMA的概念是将发射天线自适应地分配给多个用户。结果表明，与MU-SM相比，SMMA可获得高达6 dB的信噪比增益。更重要的是，随着用户数量的增加，SMMA的性能下降并不明显。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2014 IEEE 19th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)

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