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An Efficient Multi-Mode Precoding for MIMO Systems with Full CSI Myeongcheol SHIN Sangheon KIM Jiwon KANG Chungyong LEE Publication IEICE TRANSACTIONS on Communications Vol.E90-B No.10 pp.2973-2975 Publication Date: 2007/10/01 Online ISSN: 1745-1345 DOI: 10.1093/ietcom/e90-b.10.2973 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: closed loop MIMO, full CSI, adaptive bit loading, mode table, mode simplification, Full Text: PDF(108.4KB)>>
Summary: For the closed loop multiple-input-multiple-output (MIMO) systems, Fisher's adaptive bit loading algorithm gives the best error performance by jointly optimizing the transmit powers, rates, and number of streams. However, its good performance comes at the cost of high and variable computational complexity for the joint optimization. In this letter, we propose an efficient multi-mode precoding algorithm using a simplified mode table. Numerical results show that the proposed algorithm provides almost the same performance as Fischer's with much less computational complexity. | |||||
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