%0 Journal Article
%T Dynamic Spectrum Sharing Scheme Based on Spectrum Adaptation and MIMO-OFDM in Cognitive Radio<br>认知无线电中基于SA-MIMO-OFDM的动态频谱共享方案
%A Hu Hao Zhou Wen-an Song Jun-de
%A <br>胡浩
%A 周文安
%A 宋俊德
%J 电子与信息学报
%D 2008
%I 
%X In this paper, a novel dynamic spectrum sharing scheme combining Spectrum Adaptation (SA) and MIMO-OFDM is proposed. In the scheme, an improved model due to signal power thresholds is adopted to accomplish spectrum adaptation for unlicensed users. In order to achieve the rate maximization, a dynamic power allocation algorithm is also presented. Simulation results indicate that the propositional scheme solves the partial interference problem of Interference Temperature Model (ITM) and the system performance is further improved via using MIMO technique. The proposed algorithm reduces the computational complexity and improves the spectrum efficiency.
%K Wireless communication
%K Dynamic spectrum sharing
%K Cognitive radio
%K MIMO-OFDM
%K Dynamic power assignment<br>无线通信
%K 动态频谱共享
%K 认知无线电
%K MIMO-OFDM
%K 动态功率分配
%K 认知无线电
%K 动态
%K 频谱利用率
%K 共享方案
%K Radio
%K Cognitive
%K Adaptation
%K Spectrum
%K Based
%K Scheme
%K Sharing
%K 计算复杂性
%K 性能
%K 系统
%K MIMO
%K 使用
%K 干扰问题
%K 局部
%K 温度模型
%K 仿真结果
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=984D4025DCA6A297E6B4DFB969DF6623&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=DF92D298D3FF1E6E&sid=C28CDC724DDFD536&eid=044F0D973C30117E&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=2&reference_num=10