【摘 要】
：
Energy efficiency (EE) of cellular networks has attracted considerable attention recently. However, EE of relay-assisted cellular networks where the macro base
【机 构】
：
Department of Communication and Information Engineering, Nanjing University of Posts and Telecommuni
论文部分内容阅读
Energy efficiency (EE) of cellular networks has attracted considerable attention recently. However, EE of relay-assisted cellular networks where the macro base stations (MBSs) are equipped with the multi-antenna has not been thoroughly addressed. This paper considered the downlink transmission of multi-antenna relay-assisted cellular networks, meanwhile, a strategic sleep scheme was used in relay stations (RSs), which dynamically adjusted the RS working mode according to whether the number of users serviced by the relay exceeds a given threshold. A geometric model was built to derive the coverage probability and mean achievable rate from the MBSs to user (UE), the MBS to RS, the RS to UE links and analyze the system EE. It is shown that the energy efficiency of cellular network with strategic sleep RS is slightly higher than that of cellular network with non-sleeping strategy. Furthermore, the MBS equipped with multi-antenna has better impact on energy efficiency and spectral efficiency than the MBS with single antenna.
其他文献
青光眼是全球第二大致盲眼病,第一大不可逆性致盲眼病,其中原发性闭角型青光眼(primary angle closure glaucoma,PACG)占25％.激光周边虹膜切除术(laser peripheral iridotomy,
请下载后查看，本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
目的对潍坊市售液态奶与奶粉中黄曲霉毒素M1的含量进行调查分析。方法随机抽取不同品牌的超高温灭菌液态全脂纯牛奶(UHT奶)41份、巴氏灭菌液态全脂牛奶7份,牛奶粉51份(其中婴
子宫内膜异位症(endometriosis,EM)是一种常见的妇科良性疾病,但某些生物学行为却与恶性肿瘤相似,EM的发病机制尚未完全阐明.近年来,随着分子生物学和免疫学的发展,和对EM的
计划生育管理是隶属于社会管理的一个重要环节。而针对基层群众开展的教育活动是计划生育管理中的基础环节,对计划生育的发展有着千丝万缕的联系。基层教育是计划生育的根本,
以番茄和豆角为试材,采用大棚番茄老株更新套种豆角栽培模式,研究了其对番茄的产量及产值的影响。结果表明:番茄老株更新后套种豆角与不套种豆角相比,番茄每667m2总产量减少
请下载后查看，本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
直肠脱垂是直肠粘膜、肛管、直肠和部分乙状结肠向下移位、脱出肛门外的一种疾病,是肛肠外科颇感棘手的病症.现就目前外科治疗直肠脱垂的研究近况综述如下.
针对集装箱船舶配载系统开发过程中数据处理运算量大的要求,从MatrixVB组件和VB的特性出发,提出了运用VB与MatrixVB结合进行数据处理的技术.并以实例进行讨论,结果表明,此方
This paper describes the hydrogenation of impurities in the methanol-containing eflfuent from the propylene epoxidation process with hydrogen peroxide. The effe