Multi-Pair Two-Way Relay Channel with Multiple Antenna Relay Station
Multi-Pair Two-Way Relay Channel with Multiple Antenna Relay Station
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DOI：
10.1109/icc.2010.5502396
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发表时间：
2010-05
期刊：
影响因子：
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通讯作者：
E. Yilmaz;R. Zakhour;D. Gesbert;R. Knopp
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文献类型：
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作者：
E. Yilmaz;R. Zakhour;D. Gesbert;R. Knopp
我们考虑一个多对双向中继信道（TWRC）的单天线移动的终端（MT）上的每一对寻求通信，并可以这样做，通过一个共同的多天线中继站（RS）。在多对TWRC中，系统性能的主要瓶颈是每个MT由于其他通信MT对而受到的干扰。在本文中，我们试图解决这个问题，在空间域中使用多个天线在RS。考虑到放大转发（AF）和量化转发（QF）中继策略，在RS处提出了不同的发送/接收波束成形方案。我们将我们提出的方案相互比较，并与可实现的总速率作为性能指标的解码和转发（DF）中继策略进行比较，结果表明，在很宽的信噪比（SNR）范围内，我们的方案优于DF中继策略。
We consider a multi-pair two-way relay channel (TWRC) where the single-antenna mobile terminals (MT) on each pair seek to communicate, and can do so, via a common multiple antenna relay station (RS). In the multi-pair TWRC, the main bottleneck on system performance is the interference seen by each MT due to the other communicating MT pairs. In this paper, we try to tackle this problem in the spatial domain by using multiple antennas at the RS. Considering Amplify-and-Forward (AF) and Quantize-and-Forward (QF) relaying strategies, different transmit/receive beamforming schemes at the RS are proposed. We compare our proposed schemes to each other and to the Decode-and-Forward (DF) relaying strategy with achievable sum rate taken as a performance metric and show that in a wide range of signal-to-noise ratio (SNR) our schemes outperform the DF relaying strategy.