Correction of Carrier Frequency Offsets in OFDM-Based Spatial Multiplexing MIMO With Distributed Transmit Antennas

Author

Deng, Kai ; Tang, Youxi ; Shao, Shihai ; Sun, Ke

Author_Institution

Nat. Key Lab. of Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu

Volume

58

Issue

4

fYear

2009

fDate

5/1/2009 12:00:00 AM

Firstpage

2072

Lastpage

2077

Abstract

This correspondence focuses on the correction of carrier frequency offsets (CFOs) in orthogonal frequency-division multiplexing (OFDM)-based spatial multiplexing multi-input-multi-output (MIMO) with distributed transmit antennas, where the CFOs between the receiver and each transmit antenna are possibly different. Considering macroscopic fading and multipath Rayleigh fading, the average power of the intercarrier interference (ICI) caused by the CFOs is derived, and the optimal CFO correction value is then obtained by maximizing the average signal-to-interference-and-noise ratio (SINR). In particular, when the difference between the minimum and maximum values of the CFOs is no more than half of the adjacent subcarrier spacing, an upper bound of the average ICI power can be obtained, and a closed-form solution of the optimal CFO correction value is derived.

Keywords

MIMO communication; OFDM modulation; Rayleigh channels; intercarrier interference; multipath channels; receiving antennas; space division multiplexing; transmitting antennas; OFDM-based spatial multiplexing MIMO; carrier frequency offset correction; distributed transmit antenna; intercarrier interference; macroscopic fading channel; multipath Rayleigh fading channel; orthogonal frequency-division multiplexing; receiver antenna; Carrier frequency offsets (CFOs); correction; distributed antennas; multi-input–multi-output (MIMO); orthogonal frequency-division multiplexing (OFDM);

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/TVT.2008.2005032

Filename

4663877