Low Complexity Symbol-Wise Beamforming for MIMO-OFDM Systems

Author

Lee, Hyun-Ho ; Park, Ki-Hong ; Yang, Hong-Chuan ; Ko, Young-Chai

Author_Institution

Sch. of Electr. Eng., Korea Univ., Seoul, South Korea

fYear

2011

fDate

5-9 Dec. 2011

Firstpage

1

Lastpage

5

Abstract

In this paper, we consider a low complexity symbol-wise beamforming for MIMO-OFDM systems. We propose a non-iterative algorithm for the symbol-wise beamforming, which can provide the performance approaching that of the conventional symbol-wise beamforming based on the iterative algorithm. We demonstrate that our proposed scheme can reduce the computational complexity significantly. From our simulation results, it is evident that our proposed scheme leads to a negligible performance loss compared to the conventional symbol-wise beamforming regardless of spatial correlation or presence of co-channel interference.

Keywords

MIMO communication; OFDM modulation; array signal processing; cochannel interference; computational complexity; iterative methods; MIMO-OFDM systems; cochannel interference; computational complexity; iterative algorithm; low complexity symbol-wise beamforming; multiple-input multiple-output systems; orthogonal frequency-division multiplexing; spatial correlation; Array signal processing; Complexity theory; Eigenvalues and eigenfunctions; Interference; OFDM; Signal to noise ratio; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference (GLOBECOM 2011), 2011 IEEE

Conference_Location

Houston, TX, USA

ISSN

1930-529X

Print_ISBN

978-1-4244-9266-4

Electronic_ISBN

1930-529X

Type

conf

DOI

10.1109/GLOCOM.2011.6133725

Filename

6133725