Title: A Novel Forwarding Method for Full-Duplex Two-Way Relay Networks
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| Authors: Han, SS; Cheng, X; Yang, LQ
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| Author Full Names: Han, Shuangshuang; Cheng, Xiang; Yang, Liuqing
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| Source: CHINA COMMUNICATIONS, 14 (4):65-72; APR 2017
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| Language: English
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| Abstract: An estimate-and-forward (EF) scheme for single-input single-output (SISO) and multiple-input multiple-output (MEMO) full-duplex two-way relay networks is proposed and analyzed. The relay estimates the received signal from two terminal nodes by a minimum mean squared error (MMSE) estimation and forwards a scaled version of the MMSE estimate to the destination. The proposed EF outperforms conventional amplify -and-forward (AF) and decode-and-forward (DF) across all signal-to-noise ratio (SNR) region. Because its computational complexity is high for relays with a large number of antennas (large MIMO) and/or high order constellations, an approximate EF scheme, called list EF, are thus proposed to reduce the computational complexity. The proposed list EF computes a candidate list for the MMSE estimate by using a sphere decoder, and it approaches the performance of the exact EF relay at a negligible performance loss. The proposed forwarding approach also could be used to other relay networks, such as half-duplex, one-way or massive MIMO relay networks.
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| ISSN: 1673-5447
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| IDS Number: EV0BA
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| Unique ID: WOS:000401402200006
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