Improved Interference Cancellation Scheme for <i>X</i>Channels with Four Antennas  

作　　者：Xinji Tian Dong Yang Haotian Zhang Wenjie Jia 

机构地区：[1]School of Physics & Electronic Information Engineering, Henan Polytechnic University, Jiaozuo, China

出　　处：《Journal of Computer and Communications》2017年第6期57-64,共8页电脑和通信（英文）

摘　　要：Interference cancellation scheme without feedback is proposed for X channels with four antennas at each user. Space-time codeword with Alamouti structure is designed for each user. Codewords are combined according a certain rule. The unwanted codewords are cancelled by linear operation on the received signals. Then, multi-user interference is mitigated by the orthogonal property of the Alamouti code. Comparing with the existing scheme for the same scene, feedback information is not required in the proposed scheme. So the transmission efficiency is improved.Interference cancellation scheme without feedback is proposed for X channels with four antennas at each user. Space-time codeword with Alamouti structure is designed for each user. Codewords are combined according a certain rule. The unwanted codewords are cancelled by linear operation on the received signals. Then, multi-user interference is mitigated by the orthogonal property of the Alamouti code. Comparing with the existing scheme for the same scene, feedback information is not required in the proposed scheme. So the transmission efficiency is improved.

关 键 词：X Channel Space-Time CODEWORD MULTI-USER Interference Transmission Efficiency Feedback Information 

分 类 号：TN91[电子电信—通信与信息系统]