Video transmission over ieee 802.11ac downlink multi-user: max??min fair link adaptation strategy

By exploiting the inherent nature of the H.264 encoded video streams, a practically optimal scheme that is devised to address the video-cognizant link adaptation problem in the IEEE 802.11ac downlink multi-user (DL-MU) is proposed. To maximise the received video quality of the downlink users, it selects and allocates the modulation and coding scheme and power in a manner of minimising the expected video distortion caused by transmission failures. The objectives and constraints are set such that the users gain max-min fair opportunities to perceive, at least, the required video quality. The proposed scheme is analysed, and its efficiency is validated by experiments with respect to fairness and video quality compared with the video-oblivious methods.