Bin Li 0002 Zheng Zhou 0001 Weixia Zou Xuebin Sun Guanglong Du On the Efficient Beam-Forming Training for 60GHz Wireless Personal Area Networks. 504-515 2013 12 IEEE Trans. Wirel. Commun. 2 https://doi.org/10.1109/TWC.2012.121412.110419 db/journals/twc/twc12.html#LiZZSD13