Multiuser Overhearing for Cooperative Two-Way Multiantenna Relays
Multiuser Overhearing for Cooperative Two-Way Multiantenna Relays
复制标题
协作双向多天线中继的多用户监听
DOI:
10.1109/tvt.2015.2441879
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发表时间:
2016-05
影响因子:
6.8
通讯作者:
Yang Luxi
中科院分区:
文献类型:
--
作者:
Li Chunguo;Yang Hyun Jong;Sun Fan;Cioffi John M.;Yang Luxi
In this paper, an overhearing protocol is proposed for two-way cooperative multiantenna relaying systems, where the relays equipped with multiple antennas collaborate to relay signals between the base station (BS) and two user equipment units (UEs). In the proposed overhearing protocol, the UE in the uplink transmission phase transmits only in the first time slot, i.e., it remains silent in the second time slot, whereas the previous overhearing protocol assumes that the UE transmits also in the second time slot. Therefore, the proposed overhearing protocol is more power efficient. The precoding matrix at each cooperative relay is optimized in the sense of minimizing the weighted mean squared error (WMSE). Simulation results show that the proposed scheme shows not only lower mean squared error but also higher achievable sum rate than existing cooperative relaying schemes.
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DOI:
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期刊:
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