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IEICE TRANSACTIONS on Communications

Efficient Transmit Power Allocation with Partial Feedback for Closed-Loop SQRD Based V-BLAST Systems

Hoiyoon JUNG, Jongsub CHA, Hyuckjae LEE

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Summary :

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.

Publication
IEICE TRANSACTIONS on Communications Vol.E91-B No.4 pp.1219-1222
Publication Date
2008/04/01
Publicized
Online ISSN
1745-1345
DOI
10.1093/ietcom/e91-b.4.1219
Type of Manuscript
LETTER
Category
Wireless Communication Technologies

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