| 基于OFDM的宽带MIMO信道容量研究 |
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| 引用本文： | 张钟琴,徐昌庆. 基于OFDM的宽带MIMO信道容量研究[J]. 信息技术, 2005, 29(11): 72-75 |
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| 作者姓名： | 张钟琴 徐昌庆 |
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| 作者单位： | 上海交通大学电子工程系,上海,200030 |
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| 摘 要： | 研究在发射端和接收端两端都分布有散射体的情况下基于OFDM的MIMO信道容量,推导了归一化信道功率情形下信道容量的上限,分析了各种参数对容量的影响,仿真结果表明:MIMO-OFDM信道容量不仅受到天线数目的限制,同时还受到延时扩展、簇角度扩展、相邻天线间距等因素的影响。
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| 关 键 词： | OFDM MIMO 多径延时信道 各态历经容量 |
| 文章编号： | 1009-2552(2005)11-0072-04 |
| 收稿时间： | 2005-05-26 |
| 修稿时间： | 2005-05-26 |
Capacity of broad-band OFDM-based MIMO systems |
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| ZHANG Zhong-qin,XU Chang-qing. Capacity of broad-band OFDM-based MIMO systems[J]. Information Technology, 2005, 29(11): 72-75 |
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| Authors: | ZHANG Zhong-qin XU Chang-qing |
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| Affiliation: | Dept. of Electronic Eng., Shanghai Jiaotong Univ., Shanghai 200030, China |
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| Abstract: | This paper deals with the ergodic capacity behavior of wireless OFDM-based MIMO systems in broad-band fading environments for the case where the scatterers distribute randomly between the transmitters and receivers.An upper bound of the capacity is introduced and the influence of various parameters on ergodic capacity is analyzed.The simulation results show that the channel capacity of MIMO-OFDM system is influenced by delay spread,cluster angle spread and antenna spacing as well as the number of antennas. |
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| Keywords: | OFDM MIMO multi-path delay spread channel ergodic capacity |
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