Novel MIMO Detection With Improved Complexity for Near-ML Detection in MIMO-OFDM Systems

被引：19

作者：

Choi, Seung-Jin ^{[1
]}

Shim, Seong-Joon ^{[1
]}

You, Young-Hwan ^{[2
]}

Cha, Jaesang ^{[3
]}

Song, Hyoung-Kyu ^{[1
]}

机构：

[1] Sejong Univ, Dept Informat & Commun Engn, Seoul 05006, South Korea

[2] Sejong Univ, Dept Comp Engn, Seoul 05006, South Korea

[3] Seoul Natl Univ Sci & Technol, Dept Elect & IT Media Engn, Seoul 01811, South Korea

来源：

IEEE ACCESS | 2019年 / 7卷

关键词：

MIMO systems; OFDM; signal detection; QRD-M; BFTS; multiplexing gain; DETECTION ALGORITHM; SIGNAL-DETECTION; QRD-M; LTE;

D O I：

10.1109/ACCESS.2019.2914707

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, a novel efficient algorithm for MIMO detection in MIMO-OFDM systems has been proposed. This paper also shows that the complexity can be greatly reduced by applying the threshold in the breadth-first tree search algorithm step to eliminating paths. That is, this algorithm derives thresholds based on the LR-aided nonlinear algorithm and performs a simple tree search detection algorithm. This algorithm requires a lower computational complexity than the conventional QRD-M detection algorithm and achieves the same bit error performance. After the novel detection algorithm is proposed, this paper applies this algorithm to the MIMO-OFDM system for performance comparison in terms of error performance and complexity. In many cases of MIMO-OFDM receivers, the proposed method will be an excellent option for implementation.

引用

页码：60389 / 60398

页数：10

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