Efficient transmit power allocation with partial feedback for closed-loop SQRD based V-BLAST systems

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This letter proposes an efficient transmit power allocation using partial channel information feedback for the closed-loop sorted QR decomposition (SQRD) based V-BLAST systems. For the feedback information, the positive real-valued diagonal elements of R are forwarded to the transmitter. With the proposed transmit power allocation that is numerically derived by the Lagrange optimization method, the bit error rate performance of the system can be remarkably improved compare to the conventional open-loop SQRD based V-BLAST systems without increasing the receiver complexity.
Publisher
IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
Issue Date
2008-04
Language
English
Article Type
Article
Citation

IEICE TRANSACTIONS ON COMMUNICATIONS, v.E91B, no.4, pp.1219 - 1222

ISSN
0916-8516
DOI
10.1093/ietcom/e91-b.4.1219
URI
http://hdl.handle.net/10203/12833
Appears in Collection
EE-Journal Papers(저널논문)
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