A comparison of implicit and explicit channel feedback methods for MU-MIMO WLAN systems
作者： Hanqing Lou , Monisha Ghosh , Pengfei Xia , Robert Olesen
DOI: 10.1109/PIMRC.2013.6666172
关键词:
摘要: In this paper we compare the implicit and explicit methods of providing channel state information (CSI) to transmitter in a multi-user multiple-input-multiple-output (MU-MIMO) system as specified draft specification IEEE 802.11ac [1]. The comparison is made on basis both overhead requirements packet-error-rate (PER) performance. We also propose hybrid feedback scheme that combines thus benefiting from more frequent calibration without incurring extra overhead.
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