STBC MIMO-OFDM peak-to-average power ratio reduction by cross-antenna rotation and inversion

Document Type

Article

Publication Date

7-1-2005

Abstract

Multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) has become a promising candidate for high performance 4G broadband wireless communications. However, like OFDM, one main disadvantage of MIMO-OFDM is that the signals transmitted on different antennas might exhibit a prohibitively large peak-to-average power ratio (PAPR). We will show that the PAPR reduction for MIMO-OFDM needs a more efficient solution than applying existing schemes for OFDM systems separately on each antenna. Further, we suggest a scheme of cross-antenna rotation and inversion (CARI), which utilizes additional degrees of freedom by employing multiple antennas. Two suboptimal schemes, termed successive suboptimal CARI (SS-CARI) and random suboptimal (RS-CARI) show significant performance advantages and lower computational complexity compared to the concurrent selective mapping (SLM) scheme proposed in [1]. © 2005 IEEE.

Identifier

23144437409 (Scopus)

Publication Title

IEEE Communications Letters

External Full Text Location

https://doi.org/10.1109/LCOMM.2005.07017

ISSN

10897798

First Page

592

Last Page

594

Issue

7

Volume

9

Grant

CNS 0338788

Fund Ref

National Science Foundation

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