全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

一种多用户MIMO/OFDMA系统的资源分配和调度方案

DOI: 10.13190/jbupt.200805.131.319, PP. 131-134

Keywords: 空分多址,资源分配,调度算法,多业务,服务质量

Full-Text   Cite this paper   Add to My Lib

Abstract:

针对下行多用户多入多出/正交频分复用系统,提出了一种适合多业务类型的资源分配和调度算法.综合考虑了不同业务类型的服务质量需求,根据用户的信道条件、吞吐量和队列状态确定调度优先级;结合用户信道的空间相关性进行用户选择、功率分配和比特加载.通过充分利用空、时、频多用户分集增益,在保证实时业务最小时延要求和非实时业务最小速率要求的同时,最大化系统的吞吐量.仿真结果说明,所提算法在系统吞吐量、丢包率及最小速率满足率方面得到了改善.

References

[1]  Yoo T, Goldsmith A. On the optimality of multiantenna broadcast scheduling using zero-forcing beamforming[J]. IEEE Journal on Selected Areas in Communications, 2006, 24(3): 528-541.
[2]  Koutsopoulos I, Tassiulas L. Adaptive resource allocation in SDMA based wireless broadband networks with OFDM signaling//INFOCOM 2002. New York: IEEE Press, 2002: 1376-1385.
[3]  Bartolome D, Perez-Neira A I. Practical implementation of bit loading schemes for multiantenna multiuser wireless OFDM systems [J]. IEEE Transactions on Communications, 2007, 55(8): 1577-1587.
[4]  Zhang Y J, Letaief K B. Cross-layer adaptive resource management for wireless packet networks with OFDM signaling[J]. IEEE Transaction on Wireless Communications, 2006, 5(11): 3244-3254.
[5]  Chung S T, Goldsmith A. Degrees of freedom in adaptive modulation: aunified view[J]. IEEE Transaction on Communications, 2001, 49(9): 1561-1571.
[6]  Agrawal R, Bedekar A R La. A class and channel-condition based weighted proportional fair scheduler//ITC 2001. Salvador: IEEE Press, 2001: 553-565.
[7]  3GPP. 3GPP 25.996—2003, Spatial channel model for multiple input multiple output (MIMO) simulations[S]. 2003.
[8]  3GPP. 3GPP 25.892—2004, Feasibility study for orthogonal frequency division multiplexing for UTRAN enhancement[S]. 2004.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133