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[1] Sun Qiang, Zhang Yuan, Jin Shi, et al. Limited feedback SDMA schemes based on statistical CSI [J]. Journal of Southeast University (English Edition), 2012, 28 (1): 1-7. [doi:10.3969/j.issn.1003-7985.2012.01.001]
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Limited feedback SDMA schemes based on statistical CSI()
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
28
Issue:
2012 1
Page:
1-7
Research Field:
Information and Communication Engineering
Publishing date:
2012-03-30

Info

Title:
Limited feedback SDMA schemes based on statistical CSI
Author(s):
Sun Qiang1 2 Zhang Yuan1 Jin Shi1 Gao Xiqi1
1National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
2School of Electronic and Information Engineering, Nantong University, Nantong 226019, China
Keywords:
spatial division multiple access statistical channel state information multiuser multiple-input multiple-output
PACS:
TN929
DOI:
10.3969/j.issn.1003-7985.2012.01.001
Abstract:
This paper investigates the multi-beam selection algorithms for transmit correlation channels by using statistical channel state information(SCSI)and instantaneous channel state information. Unlike the conventional codebook-based transmission scheme, the proposed multi-beam selection with the single channel quality indicator(CQI)feedback(MBS-SCF)algorithm determines the preferred beam vector by exploiting the SCSI and only feeds back CQI at each timeslot. The performance of the MBS-SCF algorithm is nearly the same as that of the conventional scheme. In order to further improve the average sum rate, a novel multi-beam selection with the dual CQIs feedback(MBS-DCF)algorithm is proposed, which determines dual preferred statistical eigen-directions and feeds back dual CQIs at each timeslot. The theoretical analysis and simulation results demonstrate that the MBS-DCF algorithm can increase the multiuser diversity and multiplexing gain and exhibits a higher average sum rate.

References:

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Memo

Memo:
Biographies: Sun Qiang(1980—), male, lecturer, graduate; Gao Xiqi(corresponding author), male, doctor, professor, xqgao@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.60925004, 60902009, 61001103), the National Science and Technology Major Project of China(No.2009ZX03003-005-02, 2009ZX03003-011-04, 2011ZX03003-003-03), the Natural Science Foundation of Jiangsu Province of China(No.BK2011019), the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(No.10KJB510021).
Citation: Sun Qiang, Zhang Yuan, Jin Shi, et al.Limited feedback SDMA schemes based on statistical CSI[J].Journal of Southeast University(English Edition), 2012, 28(1):1-7.[doi:10.3969/j.issn.1003-7985.2012.01.001]
Last Update: 2012-03-20