| 分布式天线系统信道容量的分析 |
| |
| 引用本文： | 张宁波,康桂霞,曹鹏,张平,刘泽民. 分布式天线系统信道容量的分析[J]. 北京邮电大学学报, 2008, 31(6): 125-128 |
| |
| 作者姓名： | 张宁波 康桂霞 曹鹏 张平 刘泽民 |
| |
| 作者单位： | 泛网无线通信教育部重点实验室(北京邮电大学),北京,100876;北京邮电大学,无线新技术研究所,北京,100876;泛网无线通信教育部重点实验室(北京邮电大学),北京,100876 |
| |
| 基金项目： | 国家"863计划"项目 ， 国家自然科学基金项目 ， 高等学校学科创新引智计划项目 |
| |
| 摘 要： | 为了研究分布式多天线系统（MIMO-DAS）的信道容量，提出多小区MIMO-DAS信道模型，推导MIMO-DAS 下行传输的各态历经信道容量的表达式.利用该表达式，可以比较分布式天线系统和集中式天线系统的信道容量.仿真结果表明，分布式系统在小区80%的范围内要比集中式系统有较大的容量增益，而且，选择较少最优的天线会大大提高信道容量，当选择1根最佳天线时信道容量达到最大.
|
| 关 键 词： | 分布式多入多出系统 集中式天线系统 信道容量 天线选择 |
| 收稿时间： | 2008-05-08 |
| 修稿时间： | 2008-07-21 |
Channel Capacity Analysis of Distributed Antenna Systems |
| |
| ZHANG Ning-bo,KANG Gui-xia,CAO Peng,ZHANG Ping,LIU Ze-min. Channel Capacity Analysis of Distributed Antenna Systems[J]. Journal of Beijing University of Posts and Telecommunications, 2008, 31(6): 125-128 |
| |
| Authors: | ZHANG Ning-bo KANG Gui-xia CAO Peng ZHANG Ping LIU Ze-min |
| |
| Affiliation: | (1. Beijing University of Posts and Telecommunications, Key Laboratory of Universal Wireless Communications , Ministry of Education , Beijing 100876 , China ; 2. Beijing University of Posts and Telecommunications ,Wireless Technology Innovation Institute, Beijing 100876 , China) |
| |
| Abstract: | To analyze the channel capacity of multiple input multiple output-distributed antenna systems (MIMO-DAS) , a multiple cell channel model is proposed, and the closed-form expression for the ergodic capacity of downlink transmission in MIMO-DAS is also derived. Based on this expression, the channel capacities of distributed systems and centralized systems are compared. Simulation results show that compared with centralized systems, distributed systems improve channel capacity in the over 80% area of the cell, it is also shown that fewer optimal antennas are selected for transmission can get capacity gains greatly, when one optimal antenna is chosen, the channel capacity reaches the peak. |
| |
| Keywords: | multiple input multiple output-distributed antenna systems centralized antenna systems channel capacity antenna selection |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《北京邮电大学学报》浏览原始摘要信息 |
|
点击此处可从《北京邮电大学学报》下载全文 |
|
