Interference Mitigation Technique for CR-MIMO System
首发时间:2015-01-09
Abstract:In this paper; we investigate a new interference mitigation technique to reduce the interference of the primary user caused by the secondary user in CR-MIMO-OFDM systems. More specifically, the interference first is reduced by rough adjustment of the AIC technique and then it is further reduced by fine adjustment of the phase rotation technique. The simulation results show that the proposed interference technique approximately can decrease the interference of the primary user up to 3dB with the same complexity, compared to the conventional AIC technique, for flat fading channels.?????
keywords: CR-MIMO (cognitive radio) AIC-PR (active interference cancellation - phase rotation) algorithm interference?
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认知-MIMO系统干扰抑制技术
摘要:在认知-MIMO无线通信系统,为了降低认知用户对主用户的干扰本文提出了新的干扰抑制技术。首先通过相位旋转技术对认知用户的数据符号进行相位旋转,然后通过传统的AIC干扰消除技术进一步降低对主用户的干扰。仿真结果表示本文提出的干扰抑制技术在不提高系统复杂度的情况下能够进一步降低对主用户的干扰。在平坦衰落信道,与传统的AIC技术相比,还能降低3dB的干扰。
关键词: 认知-MIMO,AIC-PR算法 干扰
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No.4626742102892214****
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