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

• 作者: Dong Yang Haotian Zhang Wenjie Jia Xinji Tian
• 来源期刊: 电脑和通信(英文)
• 学科: 工学
• 关键词: X Channel Space-Time CODEWORD MULTI-USER Interference Transmission Efficiency Feedback Information
• 年，卷（期）: dnhtxyw_2017,（6）
• 页码范围: 57-64
• 页数: 8页
• 分类号: TN91

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.