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Yang, Hyun Jong
Advanced Information System Lab (AiS Lab)
Research Interests
  • Wireless communications, signal processing, physical-layer algorithms, communications theory

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Adaptive Overhearing in Two-Way Multi-Antenna Relay Channels

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Title
Adaptive Overhearing in Two-Way Multi-Antenna Relay Channels
Author
Li, ChunguoYang, Hyun JongSun, FanCioffi, JohnYang, Luxi
Issue Date
2016-01
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE SIGNAL PROCESSING LETTERS, v.23, no.1, pp.117 - 120
Abstract
An adaptive overhearing protocol is proposed for the two-way multi-antenna-relay network composed of a base station (BS), relay, and two user equipments (UEs), where one UE is in the uplink (UL) transmission mode (UE-Tx) while the other is in the downlink (DL) reception mode (UE-Rx). Specifically, UE-Rx not only receives the DL signal transmitted by BS but also overhears the signal transmitted by UE-Tx, and exploits the overheard signal to improve the detection performance. The transmit adaptive weights of UE-Tx over the two times slots and the precoding matrix at the relay in the second time slot are jointly optimized via the proposed iterative algorithm in the sense of maximizing the minimum signal-to-interference-plus-noise-ratio. Numerical results show that the proposed joint design provides significant sum-rate gain over the existing overhearing scheme.
URI
https://scholarworks.unist.ac.kr/handle/201301/18149
URL
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7342922
DOI
10.1109/LSP.2015.2504559
ISSN
1070-9908
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