中文

Journal of Shanghai University >

2011 , Vol. 17 >Issue 6: 691 - 695

DOI: https://doi.org/10.3969/j.issn.1007-2861.2011.06.001

Communication and Information

Improved Transceiver Structure Based on Per-antenna Rate Control Scheme for Multi-stream MultipleInput Multiple-Output Systems

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  • (1. Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China;
    2. School of Film Arts and Technology, Shanghai University, Shanghai 200072, China;
    3. Shanghai Research Center for Wireless Communications, Shanghai 200335, China)

Received date: 2010-06-03

  Online published: 2011-12-28

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Abstract

Per-antenna rate control (PARC) is an efficient way to increase throughput of multi-stream multipleinput multiple-output (MIMO) systems. In time-varying channels, however, the channel quality indicator (CQI) fed back to the transmitter becomes is outdated. There is a mismatch between the selected transmission scheme and actual situation. Therefore, the system performance may be degraded. We propose an improved transceiver structure for PARC based multi-stream MIMO system considering the channel delay effects of CQI feedback. The minimum mean square error (MMSE) channel predictor based on pilot symbol assisted modulation (PSAM) for MIMO systems is used for prediction. This scheme compensates for the performance degradation caused by transmission delay and offers a more precise application of the modulation and coding set (MCS) selection scheme for modulation and rate control. Simulations are performed to demonstrate the performance for the proposed system.

Key words：  MIMO; channel prediction; CQI; MCS; PARC

Cite this article

ZHOU Ji-Ting, XIONG Yong, ZHOU Zhi-Gang . Improved Transceiver Structure Based on Per-antenna Rate Control Scheme for Multi-stream MultipleInput Multiple-Output Systems[J]. Journal of Shanghai University, 2011 , 17(6) : 691 -695 . DOI: 10.3969/j.issn.1007-2861.2011.06.001

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