Spectrum efficiency sub-carrier and energy efficiency power allocation for downlink multi-user CoMP

来源 :The Journal of China Universities of Posts and Telecommunica | 被引量 : 0次 | 上传用户:nieguangyi127
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Coordinated multi-point transmission/reception(CoMP)was proposed currently as an effective technology to improve cell-edge throughput in next-generation wireless systems.Most of the existing work discussed clustering methods mostly to maximize the edge user throughput while neglecting the problem of energy efficiency,such as those algorithm clustering base stations(BSs)of better channel condition and BSs of worse channel condition together.In addition,BSs usually increase the transmit power to achieve higher throughput without any considering of interference caused to other users,that may result in energy waste.The authors focus on the throughput maximizing problem while fully considering energy saving problem in CoMP systems.A coefficient is defined to describe the fitness of clusters.Then a sub-carrier allocation algorithm with clustering method is put forward for CoMP downlink,which can save the transmit power of BS and increase the throughput.Furthermore a power allocation scheme is proposed based on non-cooperation game;in which the transmit power is decreased by BSs generally to reach the Nash equation(NE).Simulation shows that the proposed sub-carrier allocation scheme and power allocation algorithm are better than the existing ones on users’throughput while consumes much less energy. Coordinated multi-point transmission / reception (CoMP) was proposed as as effective technology to improve cell-edge throughput in next-generation wireless systems. Most of the existing work discussed clustering methods mostly to maximize the edge user throughput while neglecting the problem of energy efficiency, such as those algorithm clustering base stations (BSs) of better channel condition and BSs of worse channel condition together. In addition, BSs generally increase the transmit power to achieve higher throughput without any considering of interference cause other users, that may result in energy waste. The authors focus on the throughput maximizing problem while fully considering energy saving problem in CoMP systems. A coefficient is defined to describe the fitness of clusters. Chen a sub-carrier allocation algorithm with clustering method is put forward for CoMP downlink , which can save the transmit power of BS and increase the throughput. Futuremore a power allocation scheme i s proposed based on non-cooperation game; in which the transmit power is decreased by BSs generally to reach the Nash equation (NE). Simulation shows that the proposed sub-carrier allocation scheme and power allocation algorithm are better than the existing ones on users ’throughput while consumings much less energy.
其他文献
期刊
目的探讨两种术式矫治不同程度老年性上睑下垂的临床效果。方法对2003年10月~2010年10月入院的不同程度的老年性上睑下垂62患者101眼采用提上睑肌修补折叠术和额肌瓣转移术两
期刊
期刊
全球每年接受人工关节置换术的患者超过60万,仅我国就有10万左右,人工关节置换术已成为当前骨关节治疗的主要发展方向之一[1]。我国对于人工关节研究近年来开展的如火如荼,在很
目的探讨腹腔镜下胆囊切除术的临床效果,并与传统开腹切除胆囊的方法对比并分析。方法选取2010年8月~2013年1月于我院肝胆外科确诊为需要行胆囊切除术的患者102例,随机分为两组,
期刊
期刊
目的总结手术治疗梗阻性大肠癌的临床疗效。方法所有患者皆选择手术治疗,在手术治疗前采取措施改善患者的心功能,同时对患者血压进行一定的控制,最后结合患者实际的症状选择
期刊