期刊名称：International Journal of Computer Trends and Technology
电子版ISSN：2231-2803
出版年度：2018
卷号：60
期号：2
DOI：10.14445/22312803/IJCTT-V60P117
出版社：Seventh Sense Research Group
摘要：The joint design of user power allocation and relay beamforming in relaying communications, in which multiple pairs of singleantenna users exchange information with each other via multipleantenna relays in two time slots. All users transmit their signals to the relays in the first time slot while the relays broadcast the beamformed signals to all users in the second time slot. The aim is to maximize the system’s energy efficiency (EE) subject to qualityofservice (QoS) constraints in terms of exchange throughput requirements. The multiway relaying strategy consists of one multiple access phase and multiple broadcast phases. We jointly design relay beamforming matrices and users’ linear processing receivers in the broadcast phases to maximize the minimum signaltointerferenceandnoise ratio (SINR) under the relay power budget. the MRC receiver leads to a local maximum for the original joint optimization problem, while the ZF receiver has the computational advantage with a lower complexity.
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