Work

Feedback delay in precoded spatial multiplexing MIMO systems

Year: 2008

Type: conference-paper

Abstract: Precoded spatial multiplexing multiple-input multiple-output (MIMO) systems using limited feedback have been extensively studied to reduce the feedback information based on the notion of delay-free feedback channel. In order to reduce performance degradation of precoded spatial multiplexing MIMO systems due to delay in the feedback channel, in this paper, we take into account the time varying nature of the channel, and consider the feedback delay problem. We propose the use of a linear predictor at the receiver to provide the precoder at the transmitter with predicted channel state information, and hence, mitigate the effect of feedback delay. The predictor is implemented using Kalman filter. The performance of this method is evaluated using computer simulation, and the achieved results demonstrate improved bit error rate performance in frequency selective Rayleigh fading channels.

Source: IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

DOI: 10.1109/pimrc.2008.4699644

Authors: A. S. Khrwat, B. S. Sharif, C. C. Tsimenidis, S. Boussakta, S. Y. Le Goff

Institution: Newcastle University

Language: English

Topic: Advanced Wireless Communication Techniques

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2154378159

FWCI: 1.892

Cites: 8

Cited by: 4

Related to: 10