NDLI: QRD-Based Precoded MIMO-OFDM Systems with Reduced Feedback

Content Provider	IEEE Xplore Digital Library
Author	Kyeong Jin Kim Man-On Pun litis, R.A.
Copyright Year	2008
Description	Author affiliation: Nokia Inc., Irving, TX (Kyeong Jin Kim)
Abstract	A QRD-based preceded MIMO-OFDM system with reduced feedback is proposed. Unlike the conventional preceding schemes in which the receiver has to feed back information about the channel frequency response of each carrier to the transmitter, the proposed system converts the MIMO-OFDM channel into layered channels by effectively exploiting the QR decomposition of the time-domain channel impulse response matrix. As a result, the receiver in the proposed system only needs to feed back information about one preceding matrix, regardless of the total number of carriers. Furthermore, a computationally efficient implementation scheme is devised for the proposed system. Analytical and simulation results show that the proposed scheme can achieve impressive BER performance compared to the conventional schemes, yet with considerably reduced feedback.
Starting Page	708
Ending Page	712
File Size	213574
Page Count	5
File Format	PDF
ISBN	9781424420759
DOI	10.1109/ICC.2008.139
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-19
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Feedback Feeds Matrix converters Matrix decomposition Frequency response Transmitters Time domain analysis Performance analysis Computational modeling Analytical models
Content Type	Text
Resource Type	Article

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