Improved wideband precoding with arbitrary subcarrier grouping in MIMO-OFDM systems
Article
Article Title | Improved wideband precoding with arbitrary subcarrier grouping in MIMO-OFDM systems |
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ERA Journal ID | 4412 |
Article Category | Article |
Authors | Long, Hang (Author), Kim, Kyeong Jin (Author), Xiang, Wei (Author), Shen, Shanshan (Author), Zheng, Kan (Author) and Wang, Wenbo (Author) |
Journal Title | ETRI Journal |
Journal Citation | 34 (1), pp. 9-16 |
Number of Pages | 8 |
Year | 2012 |
Place of Publication | Korea |
ISSN | 1225-6463 |
2233-7326 | |
Digital Object Identifier (DOI) | https://doi.org/10.4218/etrij.12.0111.0050 |
Web Address (URL) | https://onlinelibrary.wiley.com/doi/abs/10.4218/etrij.12.0111.0050 |
Abstract | Precoding in the multiple-input multiple-output orthogonal frequency division multiplexing system is investigated. In conventional wideband precoding (WBP), only one precoder, obtained from the decomposition of the subcarrier independent channel matrix, is used for all subcarriers. With an investigation of the relationship between the subcarrier independent channel matrix and the temporal/frequency channels, an improved WBP scheme is proposed for practical scenarios in which a part of subcarriers are allocated to a user. The improved WBP scheme is a generalized scheme of which narrow-band precoding and conventional WBP schemes are special modes. Simulation results demonstrate that the improved WBP scheme almost achieves the optimum performance of a single precoder and outperforms the conventional WBP scheme in terms of the bit error ratio and ergodic capacity with slight complexity increase. The largest advantage of the improved WBP scheme on signal-to-noise ratio in simulation results is over 2.1 dB. |
Keywords | wideband precoding; bit error ratios; ergodic capacity; independent channels; MIMO-OFDM systems; narrow bands; optimum performance; orthogonal frequency division multiplexing systems; precoders; sub-carriers; subcarrier |
ANZSRC Field of Research 2020 | 460609. Networking and communications |
400699. Communications engineering not elsewhere classified | |
400608. Wireless communication systems and technologies (incl. microwave and millimetrewave) | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Beijing University of Posts and Telecommunications, China |
Inha University, Korea | |
Department of Electrical, Electronic and Computer Engineering | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q1336/improved-wideband-precoding-with-arbitrary-subcarrier-grouping-in-mimo-ofdm-systems
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