Decision-directed estimation of MIMO time-varying Rayleigh fading channels

Author

Gao, Jie ; Liu, Huaping

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA

Volume

4

Issue

4

fYear

2005

fDate

7/1/2005 12:00:00 AM

Firstpage

1412

Lastpage

1417

Abstract

This paper presents a decision-directed (DD) maximum a posteriori probability (MAP) channel-estimation scheme for multiple-input multiple-output (MIMO) time-varying fading channels. With the estimate of the channel matrix for the current symbol interval, a zero-forcing (ZF) receiver is applied to detect the spatially multiplexed data on a symbol-by-symbol basis. Symbol decisions are then fed to the channel predictor for estimation of channel coefficients in future symbol intervals. Simulated error performance of a ZF receiver with the DD MAP and perfect channel estimates is provided and compared.

Keywords

MIMO systems; Rayleigh channels; automatic repeat request; channel estimation; maximum likelihood estimation; radio receivers; signal detection; time-varying channels; MIMO time-varying Rayleigh fading channel; channel estimation scheme; channel matrix; decision feedback; decision-directed estimation; maximum a posteriori probability; multiple-input multiple-output; symbol interval; zero-forcing receiver; Channel estimation; Fading; Feedback; MIMO; Maximum likelihood estimation; Phase shift keying; Pulse modulation; Receiving antennas; Time varying systems; Transmitting antennas; Decision feedback; MAP channel estimation; multiple-input multiple-output (MIMO) systems; time-varying fading;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2005.852131

Filename

1512100