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Generalised Spatial Modulation (GSM) is a relatively new modulation scheme for multi-antenna wireless communications to further increase the spectral efficiency of Spatial Modulation (SM). There are two well-known Sphere Decoding (SD) algorithms tailored to SM: Receiver-centric SD (SM-Rx) and Transmit-centric SD (SM-Tx). In this paper, we show that the SM-Rx is applicable to GSM while SM-Tx is not...
In this paper, we investigate the achievable downlink rate of line-of-sight (LOS) multiple-input multiple-output (MIMO) systems, where uniform circular arrays (UCAs) is deployed at Base station (BS). Based on an existing three-dimensional channel model developed by considering both the azimuth and elevation dimensions. We first analyze channel vectors by assuming that users are randomly distributed...
In this paper, we consider the energy-efficient power allocation in the downlink of a large-scale multiple-input multiple-output (MIMO) system under both quality of service (QoS) constraints and maximum transmit power constraints. With these two constraints satisfied, the resource allocation strategies are proposed, which aim to maximize the energy-efficiency defined as the successfully delivered...
In this paper, we propose a hybrid cellular network structure where co-frequency vertical coverage embedded on the cell edge, to improve the performance in the cell edge, using the cell interference depth as the interference threshold. Based on this proposed structure, three key performance metrics, i.e., the spectral efficiency, the cell throughput and the energy efficiency, are analyzed. The results...
This paper investigates an antenna selection scheme performing interference mitigation in device-to-device (D2D) communication underlaying cellular networks. Exact closed-form expression of the ergodic achievable rate is derived. Based on this result, the analysis in the high SNR regime at the base station (BS) and the scenario with very large antenna number are investigated, which indicate the saturation...
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