Energy efficiency and sum rate when massive MIMO meets device-to-device communication
Energy efficiency and sum rate when massive MIMO meets device-to-device communication
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DOI：
10.1109/iccw.2015.7247251
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发表时间：
2015-05
期刊：
影响因子：
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通讯作者：
Serveh Shalmashi;Emil Björnson;M. Kountouris;K. Sung;M. Debbah
中科院分区：
文献类型：
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作者：
Serveh Shalmashi;Emil Björnson;M. Kountouris;K. Sung;M. Debbah
本文考虑了一种被称为设备对设备（D2D）通信的短距离通信场景，其中D2D用户重用蜂窝网络的下行链路资源直接向其相应的接收器发送数据。此外，在基站（BS）上使用多个天线，以便通过多用户或大规模MIMO同时支持多个蜂窝用户。该网络模型考虑固定数量的蜂窝网络用户，并且D2D用户按照齐次泊松点过程（PPP）进行分布。研究了两个指标，即平均和率（ASR）和能源效率（EE）。我们推导了易于处理的表达式，并研究了ASR和EE之间的权衡，作为给定覆盖区域内BS天线数量和D2D用户密度的函数。
This paper considers a scenario of short-range communication, known as device-to-device (D2D) communication, where D2D users reuse the downlink resources of a cellular network to transmit directly to their corresponding receivers. In addition, multiple antennas at the base station (BS) are used in order to simultaneously support multiple cellular users using multiuser or massive MIMO. The network model considers a fixed number of cellular users and that D2D users are distributed according to a homogeneous Poisson point process (PPP). Two metrics are studied, namely, average sum rate (ASR) and energy efficiency (EE). We derive tractable expressions and study the tradeoffs between the ASR and EE as functions of the number of BS antennas and density of D2D users for a given coverage area.