Adaptive joint precoding and pre-equalization with reduced complexity in massive MIMO systems

Adaptive joint precoding and pre-equalization with reduced complexity in massive MIMO systems
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降低大规模 MIMO 系统复杂性的自适应联合预编码和预均衡

DOI:
10.1002/wcm.2749
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发表时间:
2016-12
影响因子:
--
通讯作者:
Tao Jiang
Tao Jiang
中科院分区:
计算机科学4区
文献类型:
--
作者:
Du Xiong;Wei Peng;Da Chen;Tao Jiang

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在本文中,一个大规模的多输入多输出的下行链路的情况下,用户的数量在一个大的动态范围内变化。提出了一种自适应联合预编码和预均衡算法,降低了算法复杂度。在预均衡过程中采用逐次超松弛方法避免了高维信道矩阵求逆,并提出了一种缩减长度的反馈滤波器以降低预编码的计算复杂度。此外,提出了一种自适应收发器结构来打开/关闭预编码过程,使得可以以最小的计算复杂度成本容纳多个用户。仿真结果表明,与传统方案相比,本文提出的自适应联合预编码和预均衡方案可节省约90%的计算复杂度。版权所有© 2016约翰威利父子有限公司.
In this paper, a massive multiple input multiple output downlink scenario is considered where the number of users varies in a large dynamic range. An adaptive joint precoding and pre-equalization with reduced complexity is proposed. Specifically, the successive over-relaxation method is employed in the pre-equalization process to avoid the high-dimensional channel matrix inversion, and a reduced-length feedback filter is proposed to reduce the computational complexity of the precoding. Moreover, an adaptive transceiver structure is proposed to switch on/off the precoding process so that multiple users can be accommodated with the least cost of the computational complexity. Simulation results show that, compared with the traditional scheme, the proposed adaptive joint precoding and pre-equalization can save about 90% of the computational complexity. Copyright © 2016 John Wiley & Sons, Ltd.
DOI: 10.2307/2153000
发表时间: 1991
期刊: --
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