PAPR Reduction in MIMO-OFDM Systems: Spatial and Temporal Processing

被引：5

作者：

Karimi, Bashir Reza ^{[1
]}

Beheshti, Mojtaba ^{[2
]}

Omidi, Mohammad Javad ^{[1
]}

机构：

[1] Isfahan Univ Technol, Dept Elect & Comp Engn, Esfahan 8415683111, Iran

[2] Isfahan Univ Technol, Informat & Commun Technol Inst, Esfahan 8415683111, Iran

来源：

WIRELESS PERSONAL COMMUNICATIONS | 2014年 / 79卷 / 03期

关键词：

Multiple-input multiple-output (MIMO); Orthogonal frequency division multiplexing (OFDM); Peak-to-average power ratio (PAPR); Spatial and temporal processing; AVERAGE POWER RATIO; SIDE INFORMATION; PAR REDUCTION; SIGNAL; COMPUTATION;

D O I：

10.1007/s11277-014-1965-y

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

Multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) technology is a promising solution for next generation wireless communications, due to high bandwidth efficiency, resistance to RF interference, and robustness to multipath fading. A major drawback of OFDM is its high peak-to-average power ratio (PAPR) which results in non-linearities in the output signal. In this paper, two methods based on spatial/temporal processing are proposed to reduce the PAPR of MIMO-OFDM systems. These methods divide the OFDM block at each transmit antenna into some subblocks. Then, spatial and temporal processing in the form of circular shifting or interleaving are applied to generate different candidate sequences. Finally, for each transmit antenna the candidate sequence with the lowest PAPR is chosen for transmission. Compared to the conventional PAPR reduction schemes such as ordinary partial transmit sequences (O-PTS), the proposed methods require lower computational complexity and have superior PAPR reduction performance.

引用

页码：1925 / 1940

页数：16

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