Performance analysis of multiuser MIMO system with adaptive modulation and imperfect CSI

Based on imperfect channel state information (CSI), the performance analysis of multiuser multiple-input multiple-output (MIMO) system with rate adaptive modulation (AM) and antenna selection is presented. By means of approximate expression of bit error rate (BER) under imperfect CSI, the variable s...

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Vydané v:2013 IET International Conference on Information and Communications Technologies : April 27-29, 2013, Beijing, China s. 571 - 576
Hlavní autori: Yin, Xin, Yu, Xiangbin, Liu, Yan, Tan, Wei, Chen, Xiaomin
Médium: Konferenčný príspevok..
Jazyk:English
Vydavateľské údaje: Stevenage, UK IET 2013
The Institution of Engineering & Technology
Predmet:
Modulation and coding methods
Other topics in statistics
Radio links and equipment
adaptive modulation
ST
antenna selection
feedback delay
multiuser multiple-input multiple-output system
multiuser MIMO system
AM
bit error rate
BER constraint
imperfect CSI
rate adaptive modulation
variable switching thresholds
normalized time delay
MIMO communication
performance analysis
imperfect channel state information
error statistics
ISBN:1849196532, 9781849196536
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Abstract Based on imperfect channel state information (CSI), the performance analysis of multiuser multiple-input multiple-output (MIMO) system with rate adaptive modulation (AM) and antenna selection is presented. By means of approximate expression of bit error rate (BER) under imperfect CSI, the variable switching thresholds (ST) subject to a target BER constraint are derived. By the ST, a tightly approximate BER is derived to simplify the calculation of exact BER, which has more accuracy than the existing approximate BER to evaluate the impact of feedback delay on the system performance. The simulation results show that the multiuser MIMO with AM can provide better SE than the single user counterpart. Compared with the fixed ST, the variable ST is able to reduce the effect of feedback delay on BER. Additionally the system in the presence of imperfect CSI only has slight BER performance degradation for the normalized time delay less than 0.01.
AbstractList Based on imperfect channel state information (CSI), the performance analysis of multiuser multiple-input multiple-output (MIMO) system with rate adaptive modulation (AM) and antenna selection is presented. By means of approximate expression of bit error rate (BER) under imperfect CSI, the variable switching thresholds (ST) subject to a target BER constraint are derived. By the ST, a tightly approximate BER is derived to simplify the calculation of exact BER, which has more accuracy than the existing approximate BER to evaluate the impact of feedback delay on the system performance. The simulation results show that the multiuser MIMO with AM can provide better SE than the single user counterpart. Compared with the fixed ST, the variable ST is able to reduce the effect of feedback delay on BER. Additionally the system in the presence of imperfect CSI only has slight BER performance degradation for the normalized time delay less than 0.01.
Author Yan Liu
Wei Tan
Xin Yin
Xiangbin Yu
Xiaomin Chen
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Keywords adaptive modulation
ST
antenna selection
feedback delay
multiuser multiple-input multiple-output system
multiuser MIMO system
AM
bit error rate
BER constraint
imperfect CSI
rate adaptive modulation
variable switching thresholds
normalized time delay
MIMO communication
performance analysis
imperfect channel state information
error statistics
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Snippet Based on imperfect channel state information (CSI), the performance analysis of multiuser multiple-input multiple-output (MIMO) system with rate adaptive...
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SubjectTerms Modulation and coding methods
Other topics in statistics
Radio links and equipment
Title Performance analysis of multiuser MIMO system with adaptive modulation and imperfect CSI
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