多対多通信を用いたコンピュータネットワークの性能評価に関する研究

多对多通信计算机网络性能评估研究

• 批准号: 12680432
• 负责人: ONOZATO Yoshikuni
• 金额: $ 2.3万
• 依托单位: GUNMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12680432/
• 关键词: multimedia; CDMA; Orthogonal Variable Spreading Factor; Hiearchical Cellular System; Interference; Transmitter Power Control; Notch Filter; Utilization; コンピュータネットワーク; 性能評価; DS-CDMA; セルラシステム; 階層型; 直交コード; システム容量; 劣化率

We have been focusing on DS-CDMA(Direct Sequence-Code Division Multiple Access) systems with perfect/imperfect power control, and overlaid structures with interference suppression.1. Wireless systems with perfect/imperfect power control and sectoringBased on the IS-95 protocol, a hierarchical cellular model of the reverse link is proposed, in which we assume that the received signal follows log-normal statistics, and the multi-beam antennas are employed to divide the cells. The system capacity plane and the outage probability are examined and quantified when the system is with the perfect/imperfect power control and the perfect/imperfect sectorization. According to our numerical results, we can increase the system capacity 2.3 times more than the one of the nonhierarchical cellular system. A method for the performance evaluation of the hierarchical system is also proposed for the forward link with the power control. The propagation characteristic is assumed as the log-normal statistics. The system capacity and the outage probability of macrocell, and microcell areinvestigated. The system capacity can be increased 3.1 times compared with that of the nonhierarchical system.2. Overlaid cellular systems with interference suppressionWe investigate the feasibility of the spectrum overlaid systems of TDMA/W-CDMA and N-CDMA/W-CDMA, in which the interference suppression technologies are adopted. When the systems are assumed with the perfect power control, the system capacity trade-offs and the spectrum efficiency are studied when the systems are with both slight and serious shadow fadings. We introduce the notch filtering depth p and signal level clipping depth q. According to the numerical results p and q can be flexibly selected to ensure higher spectrum efficiency.

我们一直专注于DS-CDMA（直接序列码分多址）系统与完美/不完美的功率控制，和重叠结构的干扰抑制。基于IS-95协议，提出了一种分层的反向链路蜂窝模型，其中假设接收信号服从对数正态分布，并采用多波束天线进行小区划分。研究了系统在完全/不完全功率控制和完全/不完全扇区划分情况下的容量平面和中断概率。根据我们的数值结果，我们可以增加系统容量的2.3倍以上的非分层蜂窝系统。对于功率控制的前向链路，本文还提出了一种分级系统的性能评估方法。传播特性被假定为对数正态统计。研究了宏小区和微小区的系统容量和中断概率。系统容量比非分层系统提高了3.1倍.研究了采用干扰抑制技术的TDMA/W-CDMA和N-CDMA/W-CDMA频谱重叠系统的可行性。在假设系统具有理想功率控制的情况下，研究了系统在轻微阴影衰落和严重阴影衰落两种情况下的容量权衡和频谱效率。我们引入陷波滤波深度p和信号电平限幅深度q。根据数值计算结果，可以灵活地选择p和q，以确保更高的频谱效率。

项目成果

R.Assarut, K.Kawanishi, U.Yamamoto, Y.Onozato, M.Matsushita: "Region Division Assignment of Orthogonal Variable-Spreading-Factor Codes in W-CDMA"IEEE 54th Vehicular Technology Conference (VTC Fall 2001), October 7-11, Atlantic City, U.S.A.. 1884-1888 (200

R.Assarut、K.Kawanishi、U.Yamamoto、Y.Onozato、M.Matsushita：“W-CDMA 中正交可变扩展因子代码的区域划分分配”IEEE 第 54 届车辆技术会议（VTC 2001 年秋季），10 月 7 日

R. Assarut, U. Yamamoto, Y. Onozato: ""Analysis of Tree reconstruction Method for Homogeneous Data Rate with the Postponement Strategy in DS-CDMA"The Technical Report of the Proceeding of the Institute of Electronics, Information and Communication Enginee

R. Assarut、U. Yamamoto、Y. Onozato：“DS-CDMA 中具有延迟策略的同质数据速率树重建方法分析”电子信息通信工程研究所会议录技术报告

R. Assarut, K. Kawanishi, U. Yamamoto, Y. Onozato, M. Matsushita: "Region Division Assignment of Orthogonal Variable-Spreading-Factor Codes in W-CDMA"IEEE 54th Vihicular Technology conference(VTC Fall 2001), October 7-11, Atlantic city, U.S.A.. 1884-1888

R. Assarut、K. Kawanishi、U. Yamamoto、Y. Onozato、M. Matsushita：“W-CDMA 中正交可变扩频因子码的区域划分分配”IEEE 第 54 届 Vihular 技术会议（VTC 2001 年秋季），10 月 7 日

J.Zhou, Y.Onozato, U.Yamamoto: "NETWORKING2000, Broadband Communications, High Performance Networking and Performance of Communication Networks, IFIPTO6/European Commission International Conference Paris, France, May 14-19, pp.908-919 2000, Lecture Notes

J.Zhou、Y.Onozato、U.Yamamoto：“NETWORKING2000，宽带通信、高性能网络和通信网络性能，IFIPTO6/欧盟委员会国际会议，法国巴黎，5 月 14-19 日，第 908-919 页，2000 年，讲座

J.Zhou, Y.Onozato, U.Yamamoto: "The Study of Burst Admission Control in an Integrated Voice/Data CDMA Cellular System"NETWORKING2000, Broadband Communications, High Performance Networking, and Performance of Communication Networks, Lecture Notes in Comput

J.Zhou、Y.Onozato、U.Yamamoto：“集成语音/数据 CDMA 蜂窝系统中突发准入控制的研究”NETWORKING2000，宽带通信、高性能网络和通信网络性能，计算机讲义