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OFDMA中继蜂窝系统的接入控制策略 被引量：1

Admission Control of OFDMA Relay Cellular System
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摘要 针对正交频分多址(OFDMA)2跳中继蜂窝系统,提出几种改进的用户接入中继的控制策略.采用启发式算法,以已接入用户的业务质量(QoS)指标、中继负载大小为约束条件,综合考虑用户对中继的选择、用户间竞争接入等情况,最大化每个中继上可减少使用的子载波数,从而有效提高资源利用率和系统容量.仿真结果验证了改进策略能进一步提高系统容量. Some new call admission control schemes in orthogonal frequency division multiplexing access（OFDMA） relaying cellular system are investigated.Subjected to hard constraint on the quality-of-service（QoS） requirements,the capability of relay,the user s selection of relay and the competence among users,these schemes enlarge the amount of subcarriers saved by two-hop transmission of each relay as much as possible,thus enhancing the resource utilization and system capacity.Simulations verify the effectiveness of the proposed scheme.
作者 龚萍 王东昊 牛凯 吴伟陵
机构地区 北京邮电大学信息与通信工程学院
出处 《北京邮电大学学报》 EI CAS CSCD 北大核心 2009年第5期132-136,共5页 Journal of Beijing University of Posts and Telecommunications
基金 国家重点基础研究发展计划项目(2007CB310604) 国家自然科学基金面上项目(60772108)
关键词 接入控制 中继 2跳 正交频分多址 业务质量 admission control relay two-hop orthogonal frequency division multiplexing access quality-of-service
分类号 TN911.22 [电子电信—通信与信息系统]
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参考文献8

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同被引文献10

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  • 6LIN P,LAI Weiru,GAN C H. Modeling opportunity driven multiple access in UMTS [ J ]. IEEE Trans on Wireless Communications, 2004,3 ( 5 ) : 1669 - 1677.
  • 7WU H Y,QIAO C M,DE S,et al. Integrated cellular and ad hoc relaying systems:iCAR[J]. [EEE Journal on Selected Areas in Com munications ,2001,19(10) :2105 -2115.
  • 8WU H, QIAO C. Modeling iCAR via multi-dimensional Markov chains[J]. ACM Mobile Networks and Applications,2003,8 ( 3 ) : 295 - 306.
  • 9YAMANAKA S,SHIMOHARA K. Modeling of a hybrid ad hoc cellular network system[ J ]. Journal of Information Science and Engineering,2007,23 ( 1 ) : 113 - 126.
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引证文献1

北京邮电大学学报
2009年 第5期

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