Systems Engineering and Electronics ›› 2018, Vol. 40 ›› Issue (10): 2340-2347.doi: 10.3969/j.issn.1001-506X.2018.10.27
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YUE Dianwu1, MENG Ziqi2, SUN Yu1, YAN Qiuna1#br# #br#
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Abstract: A multipair and twoway relaying system with amplifyandforward in Ricean fading environments is considered, where the relay station is equipped with a largescale multiple input multiple output (MIMO) antenna array. In order to efficiently reduce overhead for channel estimation and improve the spectral efficiency, firstly a linear transmission scheme only based on the line-of-sight (LoS) component is proposed. This scheme employs such a relaying process with low implement complexity that combines equal gain combining with equal gain transmission. For the proposed scheme, closedform expressions of asymptotically achievable rate with and without power scaling are derived. By comparing with the corresponding traditional linear transmission scheme based on perfect channel state information, this scheme is more suitable for application when the LOS component is relatively strong.
YUE Dianwu, MENG Ziqi, SUN Yu, YAN Qiuna. LoSbased equal gain transmission scheme for massive MIMO relaying systems[J]. Systems Engineering and Electronics, 2018, 40(10): 2340-2347.
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URL: https://www.sys-ele.com/EN/10.3969/j.issn.1001-506X.2018.10.27
https://www.sys-ele.com/EN/Y2018/V40/I10/2340