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High energy consumption at mobile devices is a critical issue for end users to access and enjoy high data-rate multimedia applications and services in Wireless Local Area Networks (WLANs). This paper develops an analytical framework for analyzing and comparing the energy efficiency performance of IEEE 802.11n Medium Access Control (MAC)(More)
The aim of this paper is to provide an energy efficiency analysis of the Cooperative Access with Relay’s Data for Multi-rate wireless local area networks (WLANs), named CARD protocol at the Medium Access Control (MAC) layer taking into account the impact of both transmission channel states and multi-rate transmission. Simulation results closely match the(More)
Per-antenna rate control (PARC) has been proved to be an efficient way to increase throughput of multi-stream MIMO system in previous studies and selected as a powerful candidate for Rel. 7 WCDMA and 3GPP LTE standardization. In this paper, we proposed an optimized modulation and coding set (MCS) selection scheme for PARC based multi-stream MIMO system(More)
Close loop transmission incorporating preceding, rate and power loading etc, can improve the performance of multiple-input multiple-output (MIMO) antenna system and draw much attention in recent research. However, the feedback overhead of channel information may significantly reduce the system throughput especially in FDD mode. In this paper, a statistical(More)