NDLI: Performance model for MRC receivers with adaptive modulation and coding in rayleigh fading correlated channels with imperfect CSIT

Content Provider	IEEE Xplore Digital Library
Author	Samano-Robles, R. Lavendelis, E.
Copyright Year	2015
Description	Author affiliation: Dept. of Syst. Theor. & Design, Riga Tech. Univ., Riga, Latvia (Lavendelis, E.) \|\| Res. Centre in Real-time & Embedded Comput. Syst., Porto, Portugal (Samano-Robles, R.)
Abstract	This paper presents a performance model of the reception process in a wireless link with one antenna transmitter and a multiple-antenna maximum-ratio combining (MRC) receiver. The objective is to address the performance evaluation of multiple antenna systems enabled with adaptive modulation and coding (AMC). Two main assumptions are used: 1) Rayleigh fading correlated channels, and 2) imperfect (outdated) channel state information at the transmitter side (CSIT). The results presented here suggest that spatial correlation not always affects the performance of the MRC receiver: at low signal-to-noise ratio (SNR), correlation can improve performance rather than degrading it. By contrast, at high SNR, correlation is found to always degrade performance. At high SNR, correlation tends to worse the degrading effects of imperfect CSIT, particularly when the number of antennas increases. Imperfect CSIT causes errors in the assignment of modulation and coding schemes (MCSs), thus reducing throughput performance. These errors become more evident at high SNR, particularly when the values of branch correlation and the number of antennas increase.
Starting Page	26
Ending Page	29
File Size	348626
Page Count	4
File Format	PDF
e-ISBN	9781467374316
DOI	10.1109/RTUWO.2015.7365712
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-11-05
Publisher Place	Latvia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fading Correlation Transmitters Modulation Receivers Antennas Signal to noise ratio
Content Type	Text
Resource Type	Article

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