Employing Power Allocation to Enhance Zero Forcing Scheme Advantages over Multi-Antenna Multiple Relay Networks

• 作者: Abolfazl Falahati Y. Attar Izi
• 来源期刊: 通讯、网络与系统学国际期刊(英文)
• 学科: 工学
• 关键词: Cooperative Communication MIMO MULTIPLE ANTENNAS MULTIPLE Relay (MAMR) Networks Zero FORCING Power Allocation
• 年，卷（期）: 2012,（11）
• 页码范围: 736-742
• 页数: 7页
• 分类号: TN92

摘要

A multi-antenna multiple relay (MAMR) network is considered and a variation of two-hop zero-forcing amplify-forward relaying method is proposed. Deploying ZF method together with application of diagonal power allocation matrices at the relays, it is shown that the overall MAMR network is simplified to M independent single antenna multiple relay (SAMR) networks, where M is the number of source and destination antennas. This enables to incorporate network beamforming proposed for SAMR networks. Accordingly, using the BER as the performance metric, we present simulation results to show the proposed approach outperforms the common ZF method addressed in the literature.