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基于随机几何理论的中继OFDM系统容量分析 被引量：2

Capacity Analysis in Relay-assisted OFDM Systems Based on the Random Geometry Theory
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摘要 该文将随机几何理论应用于特定的基于译码转发(DF)中继的OFDM系统中,通过推导分析建立基于随机几何理论的中继OFDM系统容量模型。文中假设用户在环域范围内服从随机均匀分布,同时假设接入域用户之间存在频率复用,通过在考虑接入中继链路对接入基站链路的共道干扰时,以干扰积分上限值替代实际干扰值等理论分析,在中继和基站节点功率受限的情况下,得到完整的系统闭合容量表达式模型。并通过仿真对基于容量模型的系统传输速率值与理论值进行了比较,仿真结果证实了该文所建立的容量模型的合理性。 This paper applies the random geometry theory to Decode-and-Forward （DF） relay-enhanced Orthogonal Frequency Division Multiplexing （OFDM） system and derives a new system capacity model finally. There are some assumptions that multiple users distribute uniformly in a ring region around Base Station （BS） and frequency is reused existing among users in access zone. By using the upper bound of interfere integral value to alternate the actual interfere value when considering the co-channel interference, the closed expression of system capacity is obtained under the power constraints of BS and relay nodes. Simulation results show the validity of the system capacity model.
作者 付雅茹 朱琦
机构地区 南京邮电大学江苏省无线通信重点实验室教育部宽带无线通信与传感网技术重点实验室
出处 《电子与信息学报》 EI CSCD 北大核心 2013年第10期2354-2358,共5页 Journal of Electronics & Information Technology
基金 国家973计划项目(2013CB329005) 国家自然科学基金(61171094) 国家科技重大专项(2011ZX03001-006-02 2011ZX03005-004-03) 江苏省自然科学基金重点研究专项(BK2011027)资助课题
关键词 OFDM 译码转发中继 随机均匀分布 共道干扰 OFDM Decode-and Forward （DF） Random uniform distribution Co-channel interference
分类号 TN929.5 [电子电信—通信与信息系统]
  • 相关文献

参考文献15

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二级参考文献13

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共引文献6

同被引文献22

  • 1Zhu H,Wang J.Chunk-based resource allocation in OFDMA systems—part II:Joint chunk,power and bit allocation[J].Communications,IEEE Transactions on,2012,60(2):499-509.
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  • 7Sung-Yeon Kim,Jeong-Ahn Kwon,Jang-Won Lee.Resource allocation for the multi-cell OFDMA system and its capacity bounds.Modeling & Optimization in Mobile,Ad Hoc & Wireless Networks (WiOpt)[C].Tsukuba Science City,Japan:IEEE Computer Society,2013.326-332.
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引证文献2

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电子与信息学报
2013年 第10期

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