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Performance analysis of adaptive modulation and transmit antenna selection with channel prediction errors and feedback delay

McLoughlin, Ian Vince, Prakash, Shiva (2013) Performance analysis of adaptive modulation and transmit antenna selection with channel prediction errors and feedback delay. IET Communications, 7 (16). pp. 1852-1862. ISSN 1751-8628. E-ISSN 1751-8636. (doi:10.1049/iet-com.2013.0096) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1049/iet-com.2013.0096

Abstract

Rate-adaptive modulation and transmit antenna selection require channel knowledge at the transmitter, typically achieved using a feedback communications path from receiver to transmitter. Feedback delay in such systems causes outdated channel knowledge at the receiver and thus suboptimal switching decisions. This study evaluates the effect of degraded switching and proposes a channel prediction scheme to mitigate against delay-induced performance degradation, specifically when deployed in Rayleigh fading channels using maximum ratio combining at the receiver. Shannon capacity expressions are found and then closed form bit-error-rate and average spectral efficiency expressions derived â?? all derivations supporting arbitrary number of antennas at both receiver and transmitter. These expressions are developed to allow optimal switching boundaries to be determined for M-quadrature amplitude modulation rate adaptation under different degrees of channel prediction error, system arrangement and number of antennas.

Item Type: Article
DOI/Identification number: 10.1049/iet-com.2013.0096
Uncontrolled keywords: BER, M-quadrature amplitude modulation rate adaptation, QAM, Rayleigh fading channels, Shannon capacity expressions, average spectral efficiency expressions, channel knowledge, channel prediction errors, closed form bit-error-rate, delay-induced performance degradation, feedback communications path, feedback delay, maximum ratio combining, performance analysis, rate-adaptive modulation, suboptimal switching decisions, transmit antenna selection
Subjects: T Technology
Divisions: Faculties > Sciences > School of Computing
Depositing User: Ian McLoughlin
Date Deposited: 25 Aug 2015 09:47 UTC
Last Modified: 29 May 2019 14:39 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/48818 (The current URI for this page, for reference purposes)
McLoughlin, Ian Vince: https://orcid.org/0000-0001-7111-2008
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