Power allocation algorithm for orthogonalized spatial multiplexing

Young Tae Kim, Seokhwan Park, Inkyu Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationGLOBECOM - IEEE Global Telecommunications Conference
Pages3969-3973
Number of pages5
DOIs
Publication statusPublished - 2007 Dec 1
Event50th Annual IEEE Global Telecommunications Conference, GLOBECOM 2007 - Washington, DC, United States
Duration: 2007 Nov 262007 Nov 30

Other

Other50th Annual IEEE Global Telecommunications Conference, GLOBECOM 2007
CountryUnited States
CityWashington, DC
Period07/11/2607/11/30

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Kim, Y. T., Park, S., & Lee, I. (2007). Power allocation algorithm for orthogonalized spatial multiplexing. In GLOBECOM - IEEE Global Telecommunications Conference (pp. 3969-3973). [4411664] https://doi.org/10.1109/GLOCOM.2007.754