TY - GEN
T1 - Power allocation algorithm for orthogonalized spatial multiplexing
AU - Kim, Young Tae
AU - Park, Seokhwan
AU - Lee, Inkyu
PY - 2007
Y1 - 2007
N2 - In this paper, we propose a new power allocation algorithm for orthogonalized spatial multiplexing (OSM) systems over flat-fading multiple-input multiple-output (MIMO) channels. Compared to SVD-based transmission scheme, the OSM scheme exhibits a good system performance with lower complexity and feedback overhead. To further improve the performance in OSM systems with power allocation, we introduce a geometric approach on the Euclidean distance between the constellation points in the effective channel. Using this approach, we show that the optimal power allocation parameters in terms of the minimum distance can be obtained. Simulation results demonstrate that our algorithm provides a 5dB gain at a bit error rate (BER) of 10 -4 over that of no power allocation case with both QPSK and 16-QAM.
AB - In this paper, we propose a new power allocation algorithm for orthogonalized spatial multiplexing (OSM) systems over flat-fading multiple-input multiple-output (MIMO) channels. Compared to SVD-based transmission scheme, the OSM scheme exhibits a good system performance with lower complexity and feedback overhead. To further improve the performance in OSM systems with power allocation, we introduce a geometric approach on the Euclidean distance between the constellation points in the effective channel. Using this approach, we show that the optimal power allocation parameters in terms of the minimum distance can be obtained. Simulation results demonstrate that our algorithm provides a 5dB gain at a bit error rate (BER) of 10 -4 over that of no power allocation case with both QPSK and 16-QAM.
UR - http://www.scopus.com/inward/record.url?scp=39349092382&partnerID=8YFLogxK
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U2 - 10.1109/GLOCOM.2007.754
DO - 10.1109/GLOCOM.2007.754
M3 - Conference contribution
AN - SCOPUS:39349092382
SN - 1424410436
SN - 9781424410439
T3 - GLOBECOM - IEEE Global Telecommunications Conference
SP - 3969
EP - 3973
BT - IEEE GLOBECOM 2007 - 2007 IEEE Global Telecommunications Conference, Proceedings
T2 - 50th Annual IEEE Global Telecommunications Conference, GLOBECOM 2007
Y2 - 26 November 2007 through 30 November 2007
ER -