《计算机应用研究》|Application Research of Computers

两跳中继系统中调度算法的改进及性能比较

Improvement of scheduling algorithm in two-hop relay systems and its performance comparison

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作者 王春晖,戴翠琴,王光宇,陈前斌
机构 重庆邮电大学 移动通信技术重点实验室,重庆 400065
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文章编号 1001-3695(2011)01-0259-03
DOI 10.3969/j.issn.1001-3695.2011.01.073
摘要 提出了一种改进的最大载干比和比例公平(Emax C/I & EPF)调度算法。首先根据到基站的距离,划分BS和RS域,然后分别在BS和RS域内采用改进的最大载干比(Emax C/I)算法和改进的比例公平(EPF)算法。将提出的改进算法(Emax C/I & EPF)分别与部分比例公平(PPF)算法、两跳比例公平(THPF)算法以及改进前的算法进行了比较。仿真结果证明,该改进算法(Emax C/I & EPF)在系统频谱效率性能与公平性能之间达到了较好的权衡。
关键词 中继;调度算法;频谱效率;公平性
基金项目 国家自然科学基金资助项目(60972070);重庆市自然科学基金重点资助项目(CSTC2009BA2090);重庆市教委科学技术研究资助项目(KJ100514)
本文URL http://www.arocmag.com/article/1001-3695(2011)01-0259-03.html
英文标题 Improvement of scheduling algorithm in two-hop relay systems and its performance comparison
作者英文名 WANG Chun-hui, DAI Cui-qin, WANG Guang-yu, CHEN Qian-bin
机构英文名 Key Laboratory of Mobile Communication Technology, Chongqing University of Posts & Telecommunications, Chongqing 400065, China
英文摘要 This paper proposed the improved max C/I and PF scheduling algorithms. It firstly devided the relay system cellular into BS zone and RS zone according to the distance from BS. Then used the improved max compared C/I (Emax C/I) scheduling algorithm and the PF (EPF) scheduling algorithm in the BS zone and RS zone, respectively. Compared the system performance with the partial proportional fairness (PPF) scheduling algorithm, two-hop proportional fairness (THPF) scheduling algorithm, and the original max C/I and PF scheduling algorithm. Simulation results show that the proposed Emax C/I & EPF scheduling algorithm can provide the better tradeoff between spectral efficiency and users fairness in the system level.
英文关键词 relay; scheduling algorithm; spectral efficiency; fairness
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页码 259-261
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文献标志码 A