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随着移动互联技术的发展,人们在日常生活和商务活动中,越来越希望能够以移动的方式灵活地接入因特网。2002年11月,IEEE802标准委员会成立了802.20——移动宽带无线接入(MBWA)工作组,致力于为移动用户开发一个新的标准。以IEEE802.20物理层关键技术为研究对象,从一般的无线信道模型入手,通过对MIMO信道进行分析,以现有MIMO信道模型和建模方法为基础,给出一个基于IEEE802.20协议的信道模型,并在此模型上进行仿真与性能分析,得到模型的频域和时域特性,从而证明给出的信道模型和仿真方法能够准确地描述IEEE802.20的信道特性。
With the development of mobile Internet technology, people in their daily life and business activities, more and more hope to have flexible access to the Internet in a mobile manner. In November 2002, the IEEE 802.20 Committee established 802.20, the Mobile Broadband Wireless Access (MBWA) Working Group, to develop a new standard for mobile users. Taking the key technologies of the IEEE802.20 physical layer as the research object, starting from the general wireless channel model, the MIMO channel is analyzed based on the existing MIMO channel model and the modeling method, and a channel based on the IEEE 802.20 protocol Model, and in this model simulation and performance analysis, the model of the frequency and time domain characteristics to prove that the given channel model and simulation methods can accurately describe the IEEE802.20 channel characteristics.