Optimal precoding for full-duplex base stations under strongly correlated self-interference channels
| Autor: | Wang Jun, Xiao-jie Wen, Chaojin Qing, Chuan Huang |
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| Rok vydání: | 2017 |
| Předmět: |
Optimization problem
Computer Networks and Communications Frequency band Computer science 020302 automobile design & engineering 020206 networking & telecommunications 02 engineering and technology Topology Precoding Base station 0203 mechanical engineering Hardware and Architecture Control theory Signal Processing Convex optimization Telecommunications link 0202 electrical engineering electronic engineering information engineering Zero-forcing precoding Electrical and Electronic Engineering Computer Science::Information Theory Communication channel |
| Zdroj: | Frontiers of Information Technology & Electronic Engineering. 18:808-816 |
| ISSN: | 2095-9230 2095-9184 |
| DOI: | 10.1631/fitee.1700022 |
| Popis: | We study the optimal precoding for a full-duplex (FD) system, where one FD multi-antenna base station (BS) respectively transmits to and receives from two half-duplex single-antenna mobile users (MUs) on the same time slot and frequency band. At the FD BS, the received signal from the desired MU is severely affected by the extremely strong self-interference (SI) from its transmit antennas to the receive antennas. In the presence of residual SI after imperfect SI cancellation, the downlink transmission rate maximization problem subject to a targeted uplink rate is formulated as a non-convex optimization problem to characterize the achievable rate region for the considered system. Considering the case in which the SI channel is strongly correlated, the above problem is transformed into a convex problem by exploiting the rank-one property of the SI channel, which can be solved efficiently. Finally, numerical results validate the effectiveness of the proposed scheme. |
| Databáze: | OpenAIRE |
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