Exploiting Channel Angular Domain Information for Precoder Design in Distributed Antenna Systems

In this paper, the benefit of linear precoding along with distributed orthogonal space time block codes (OSTBCs) is exploited to improve the performance of distributed antenna system (DAS). In particular, we propose a novel precoder design method based on channel angular domain parameters, i.e., ave...

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Vydáno v:IEEE transactions on signal processing Ročník 58; číslo 11; s. 5791 - 5801
Hlavní autoři: Chen, Xiaoming, Zhang, Zhaoyang
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York, NY IEEE 01.11.2010
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Angular domain information
Antennas
Antennas and propagation
Applied sciences
Asymptotic properties
Block codes
Central Processing Unit
Channel state information
Channels
Coding, codes
Content addressable storage
Design engineering
Detection, estimation, filtering, equalization, prediction
distributed antenna system
distributed space-time codes
diversity order
Exact sciences and technology
Fading
Feedback
Gain
Information, signal and communications theory
Mathematical analysis
Mathematical models
Miscellaneous
non-Kronecker channel model
Optimization
Performance gain
precoder design
Signal and communications theory
Signal processing
Signal, noise
Space time codes
Studies
System performance
Telecommunications and information theory
Performance evaluation
MIMO system
Block code
Space-time codes
Parameter estimation
non-Kronecker channel model
Angular domain information
Correlation matrix
Diversity
Signal estimation
Rice fading
distributed antenna system
Distributed system
precoder design
Optimal design
distributed space-time codes
diversity order
Coding
Channel estimation
Arrival angle
Signal processing
Numerical simulation
Antenna array
Antenna
ISSN:1053-587X, 1941-0476
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Popis
Shrnutí:In this paper, the benefit of linear precoding along with distributed orthogonal space time block codes (OSTBCs) is exploited to improve the performance of distributed antenna system (DAS). In particular, we propose a novel precoder design method based on channel angular domain parameters, i.e., average angle of arrival (AOA), angular spread (AS), normalized antenna spacing (NAS) and Ricean K-factor, instead of the conventional channel correlation matrix which has been widely used to characterize MIMO channel. Built on the distributed characteristics of DAS, a more realistic non-Kronecker channel model is established, and then the optimal precoder is designed as a function of the above angular domain parameters. Asymptotic analysis reveals that, the optimal precoder acts as a combination of channel precoder and power allocator. Furthermore, the impact of the above angular domain parameters on system performance, including diversity order and coding advantage, is investigated in detail. Specifically, we find that better gain can be achieved with larger K-factor. Finally, our theoretical claims are confirmed by the numerical results.
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ISSN:1053-587X
1941-0476
DOI:10.1109/TSP.2010.2062508