[1] Wang Jing, Jiang Zhanjun, Wang Yan, You Xiaohu, et al. Employing temporal channel correlation in user selectionfor MIMO broadcast systems [J]. Journal of Southeast University (English Edition), 2008, 24 (1): 1-5. [doi:10.3969/j.issn.1003-7985.2008.01.001]

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Employing temporal channel correlation in user selectionfor MIMO broadcast systems()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

24

Issue:

2008 1

Page:

1-5

Research Field:

Information and Communication Engineering

Publishing date:

2008-03-30

Info

Title:

Employing temporal channel correlation in user selectionfor MIMO broadcast systems

Author(s):

Wang Jing;  Jiang Zhanjun;  Wang Yan;  You Xiaohu

National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China

Keywords:

user selection;  multiple-input multiple-output broadcast;  temporal channel correlation

PACS:

TN91

DOI:

10.3969/j.issn.1003-7985.2008.01.001

Abstract:

Taking the time varying nature of wireless channels into account, two user selection schemes with lower complexity are developed for multiple-input multiple-output broadcast(MIMO BC)systems.According to the relationship between coherence time and Doppler frequency, an information frame is divided into several segments.At the beginning of each segment, the user selection is carried out with the greedy selection algorithm.In the simplified user selection algorithms employing the temporal correlation(SUSTC), the selection results are applied for all the remaining slots in each segment.But in the improved simplified user selection algorithms employing the temporal correlation(ISUSTC), at the remaining slots, users are kept with favorable channel conditions selected at the previous slot, and other users are updated from the candidate pool to communicate simultaneously.Simulations show that compared with the greedy user selection method, the proposed algorithms can reduce the selection complexity with a little sum capacity loss.

References:

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[7] Dimi’/c G, Sidiropoulos N D.On downlink beamforming with greedy user selection:performance analysis and a simple new algorithm [J].IEEE Trans Signal Process, 2005, 53(10):3857-3868.
[8] Yoo T, Goldsmith A.On the optimality of multi-antenna broadcast scheduling using zero-forcing beamforming [J].IEEE J Sel Areas Commun, 2006, 24(3):528-542.
[9] Wang J, Love D J, Zoltowski M D.User selection for MIMO broadcast channel with sequential water-filling [C]//Proc of 44th Annual Allerton Conf on Commun, Control, and Computing. Monticello, IL, 2006:27-34.
[10] Jang E W, Cho Y, Choi J W, et al.Scheduling for time-varying broadcast channels [C]//Proc IEEE Int Symp on Info Theo. Nice, France, 2007:2956-2960.
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Memo

Memo:

Biographies: Wang Jing(1977—), female, graduate; You Xiaohu(corresponding author), male, doctor, professor, xhyu@seu.edu.cn.
Foundation items: The National High Technology Research and Development Program of China(863 Program)(No.2006AA01Z268), the National Natural Science Foundation of China(No.60496311).
Citation: Wang Jing, Jiang Zhanjun, Wang Yan, et al.Employing temporal channel correlation in user selection for MIMO broadcast systems[J].Journal of Southeast University(English Edition), 2008, 24(1):1-5.

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