New Approach for Relay and Transceiver Design for Interference Alignment in MIMO Interference Channels

• 作者: Hossein Vaezy Vahid Tabataba Vakili
• 来源期刊: 电脑和通信(英文)
• 学科: 工学
• 关键词: Interference ALIGNMENT Degree of FREEDOM MULTIPLE Input MULTIPLE Output (MIMO) Amplify and FORWARD (AF)
• 年，卷（期）: 2013,（3）
• 页码范围: 1-7
• 页数: 7页
• 分类号: TN91

摘要

Wireless relaying has been known to provide the improvements in link reliability, spectral efficiency, and coverage extension. In this paper, we use full duplex relays for Interference Alignment (IA) in K-users Interference Channel (IC) and show K Degrees of Freedom (DOF) is achievable. In first hop, relays receive signals from transmitters and forward them to receivers in second hop. Two iteratively algorithms are proposed for computing relays function, precoder, and decoder matrices. First algorithm minimizes leakage interference at receivers that has appropriate performance at high Signal to Noise Ratio (SNR) region. Furthermore, the second algorithm has better performance at low-mediate SNR. The performance of proposed algorithms are compared with other schemes and validated with simulation in terms of achieved sum rate.