I/Q imbalance mitigation for STBC MIMO-OFDM communication systems

Document Type

Conference Proceeding

Publication Date

9-16-2008

Abstract

In this work we study the performance degradation caused by the in-phase/quadrature (I/Q) imbalance in space-time block coded (STBC) multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) communication systems. The 2-Tx Alamouti scheme, 4-Tx quasi-orthogonal STBC (QOSTBC) scheme, and 4-Tx rotated QOSTBC (RQOSTBC) scheme with I/Q imbalance are examined in details. Our study shows that I/Q imbalance causes severe distortion in STBC MIMO-OFDM systems. By exploiting the structure of the received signal, low-complexity solutions are developed to mitigate the resultant distortion successfully. ©2008 IEEE.

Identifier

51449083901 (Scopus)

ISBN

[1424414849, 9781424414840]

Publication Title

ICASSP IEEE International Conference on Acoustics Speech and Signal Processing Proceedings

External Full Text Location

https://doi.org/10.1109/ICASSP.2008.4518304

ISSN

15206149

First Page

3093

Last Page

3096

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