• KSII Transactions on Internet and Information Systems
    Monthly Online Journal (eISSN: 1976-7277)

Equal Gain Block Decomposition Methods for Multiuser MIMO Networks

Vol. 15, No. 3, March 31, 2021
10.3837/tiis.2021.03.018, Download Paper (Free):

Abstract

In this paper, we propose a new joint precoder and postcoder design strategy to support multiple streams per user in multiuser multiple-input multiple-output (MIMO) systems. We propose two step precoding strategies using equal channel gain decomposition and block diagonalization at the transmitter. With the proposed precoder, the multiuser MIMO channel can be decomposed into multiple parallel channels with equal channel gain per user. After applying receive postcoder which is generated and sent by the transmitter, we can use ML based decoder per stream to achieve full receive diversity. Achievable sum rate bound and diversity performance of the proposed algorithm are presented with feedback signaling design and quantitative complexity analysis. Simulation results show that the proposed algorithm asymptotically approaches to the sum rate capacity of the MIMO broadcast channel while maintaining full diversity order.


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Cite this article

[IEEE Style]
I. Hwang, I. Kang, I. Hwang and C. You, "Equal Gain Block Decomposition Methods for Multiuser MIMO Networks," KSII Transactions on Internet and Information Systems, vol. 15, no. 3, pp. 1156-1173, 2021. DOI: 10.3837/tiis.2021.03.018.

[ACM Style]
Insoo Hwang, Inseok Kang, Intae Hwang, and Cheolwoo You. 2021. Equal Gain Block Decomposition Methods for Multiuser MIMO Networks. KSII Transactions on Internet and Information Systems, 15, 3, (2021), 1156-1173. DOI: 10.3837/tiis.2021.03.018.