Implementation of the SVD-based precoding sub-system for the compressed beamforming weights feedback in IEEE 802.11n/ac WLAN
Yang-Cheng Lin, Tsung-Hsien Liu, Chia-Peng Chou, Yuan-Sun Chu
Abstract
The compressed beamforming weights feedback is used in the precoded MIMO-OFDM system, e.g., IEEE 802.11n/ac WLAN, to reduce the amount of feedback information. The precoded sub-system at the receiver of this system needs to perform singular value decomposition (SVD) on the estimated channel matrices at all sub-carriers. The computed angles of the right singular vectors are to be feedback to the transmitter. Also the computed singular values and left singular vectors are to be used for designing the optimal detector. Under the exemplary scenario of four antennas at the access point and two antennas at the station, our designed architectures for the precoding sub-system can provide SVD throughput rates 16.8 and 50.4 M matrices/sec for the uplink and downlink transmissions, respectively.
BibTeX
@inproceedings{icassp2015_implementationof,
title = {Implementation of the SVD-based precoding sub-system for the compressed beamforming weights feedback in IEEE 802.11n/ac WLAN},
author = {Yang-Cheng Lin and Tsung-Hsien Liu and Chia-Peng Chou and Yuan-Sun Chu},
booktitle = {ICASSP 2015},
year = {2015}
}