Name
Title | ||
|---|---|---|
Successive Two-Way Relaying for Full-Duplex Users With Generalized Self-Interference Mitigation |
Abstract | ||
|---|---|---|
In this paper, we propose a novel successive two-way relaying (STWR) system that uses a pair of conventional half-duplex (HD) relays to mimic a full-duplex two-way relay (FD-TWR). Although classical FD-TWR is spectral efficient and expands cell coverage, the proposed STWR utilizes the existing HD infrastructure to boost the FD implementation and offers bi-directional data exchange and low-complexity residual self-interference (RSI) mitigation. To formulate STWR, we develop a unified signal model to facilitate the mitigation of the generalized self-interference (GSI). GSI consists of back-propagating interference due to two-way relaying, RSI of FD sources and inter-relay interference caused by the pairs of HD relays. Because the GSI channel matrix has a distinct row linearity, we propose an efficient digital approach to remove the GSI and design two low-complexity algorithms. These algorithms avoid RSI channel estimation, full-rank matrix, and complex matrix computation. Our analysis and simulations show that: 1) the proposed STWR achieves the multiplexing gain of the true FD-TWR; 2) the distance between the two HD relays should be optimized to achieve the highest spectral efficiency; and 3) the STWR system with two algorithms can achieve a diversity order of one or two, respectively. Therefore, the STWR concept achieves a flexible tradeoff between performance and complexity, potentially enabling large-scale relay deployments. |
Year | DOI | Venue |
|---|---|---|
2019 | 10.1109/TWC.2018.2875982 | IEEE Trans. Wireless Communications |
Keywords | Field | DocType |
Full-duplex, residual self-interference cancellation, two-way relaying, successive relaying, cooperative communication | Wireless,Single antenna interference cancellation,Communication channel,Electronic engineering,Real-time computing,Spectral efficiency,Interference (wave propagation),Multiplexing,Relay,Mathematics,Duplex (telecommunications) | Journal |
Volume | Issue | ISSN |
18 | 1 | 1536-1276 |
Citations | PageRank | References |
1 | 0.36 | 0 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Chao Ren | 1 | 21 | 3.72 |
| Haijun Zhang | 2 | 1997 | 123.11 |
| Jinming Wen | 3 | 23 | 7.16 |
| Jian Chen | 4 | 120 | 14.73 |
| C. Tellambura | 5 | 4889 | 374.02 |