NDLI: Transceiver Design Framework for Multiuser {MIMO}-{OFDM} Broadcast Systems with Channel Gram Matrix Feedback

Content Provider	IEEE Xplore Digital Library
Author	Sacristan-Murga, D. Payaro, M. Pascual-Iserte, A.
Copyright Year	2002
Abstract	This work considers a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing based multiuser broadcast system with precoding at the transmitter and feedback of channel state information. A general framework is presented for the transceiver design, and also for the design of the feedback link based on the quantization of the users' MIMO channel Gram matrices. The proposed design of the feedback link exploits the correlation of the channel response in the frequency domain due to the finite length of the channel time impulse responses to outperform other schemes based on feedback of the per carrier frequency responses. The transceiver design framework is based on a unitary linear transformation applied at the receivers which allows the computation of equivalent triangular channel response matrices at the transmitter. An analytic study of the error propagation due to the channel quantization in the feedback link and the computation of the equivalent triangular channel matrices is also performed. Based on the previous concepts, all the usual transceiver design criteria can be applied within this framework, and the particular case of a space-frequency precoder for robust mean square error minimization is derived as an example. Finally, the benefits of the proposed strategy are evaluated by means of numerical simulations and compared to other existing techniques.
Starting Page	1774
Ending Page	1787
Page Count	14
File Size	503604
File Format	PDF
ISSN	15361276
Volume Number	11
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Receivers Transmitters Quantization MIMO Robustness OFDM Matrix decomposition minimum mean square error MIMO systems matrix decomposition robust designs feedback communication broadcast channel multiuser communications
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering Computer Science Applications

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