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Transmit Power Allocation for a Modified V-BLAST System

Cited 57 time in Web of Science Cited 83 time in Scopus
Authors
Nam, Seung Hoon; Shin, Oh-Soon; Lee, Kwang Bok
Issue Date
2004-07
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
IEEE Trans. Commun., vol. 52, pp.1074-1079, Jul. 2004
Keywords
Bit-error rate (BER)detection orderingmultiple-input multiple-output (MIMO) systemtransmit power allocation (TPA)Vertical Bell Laboratories Layered Space-Time (V-BLAST)
Description
This paper was presented in part
at the 13th IEEE Symposium on Personal, Indoor and Mobile Radio Communications,
Lisbon, Portugal, September 2002.
Abstract
Abstract—In this letter, we present a modification of Vertical
Bell Laboratories Layered Space–Time (V-BLAST), and propose
an effective transmit power allocation (TPA) scheme for the modified
system. The proposed TPA scheme minimizes the uncoded biterror
rate (BER) averaged over all detection stages, and requires
small feedback overhead. Simulation results show that the modified
V-BLAST system with the proposed TPA scheme provides
a significant reduction in the uncoded BER compared with the
conventional V-BLAST system. When the minimum mean-square
error nulling is adopted, the modified V-BLAST system is found to
achieve the uncoded BER performance comparable to that of the
maximum-likelihood detection for the conventional V-BLAST architecture.
ISSN
0090-6778
Language
English
URI
http://hdl.handle.net/10371/7115
DOI
https://doi.org/10.1109/TCOMM.2004.831368
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Journal Papers (저널논문_전기·정보공학부)
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