摘要
无线移动通信系统从单输入单输出系统到多输入多输出系统经历了不同的几代时间,其中信道容量一直是比较重要的资源。在系统的接收端,用户端的容量决定了通信系统的质量。文章从最简单的单输入单输出系统开始,分析了单输入多输出系统、多输入单输出系统及多输入多输出系统的信道容量,并进行计算机仿真。仿真结果显示多输入多输出系统在提高信道容量方面具有显著的优势,因此证明实际中采用多入多出系统的必要性。同时由于硬件成本、系统复杂性等问题的限制,不能无限制地增加天线根数。未来研究多入多出系统的天线选择及大规模多入多出系统中天线根数与功率资源的关系将是十分必要的课题。
The wireless communication systems have gone through different generations from Single Input Single Output （SISO） system to Multiple Input Multiple Output （MIMO） system. The capacity is the one of the most important resources. The capacity of user in receiving end determined the quality of communication system. We analyzed the channel capacity of SISO system, SIMO （Single Input Multiple Output） system, MISO（Multiple Input Single Output） system and MIMO system and made the simula- tions. The simulation results showed that MIMO system had the advantage in improving the capacity of the system. Meanwhile, for the limitation of the cost of hardware and the complexity of the system, we could not add the antenna unlimited. It is necessary to study the antenna selection in MIMO system and the relationship between the number of antenna and the power resource in the system in massive MIMO systems.
出处
《河南机电高等专科学校学报》
CAS
2014年第5期1-4,共4页
Journal of Henan Mechanical and Electrical Engineering College
基金
河南省科技厅基础与前沿技术研究计划项目(142300410169)
河南省教育厅科学技术重点研究项目(14A510016)
