Masahiro Watanabe Hikaru Mitsuhashi Masaki Bandai Sadao Obana Takashi Watanabe Empirical Discussion on Directional MAC Protocols for Ad hoc Networks using Practice Smart Antennas. 3642-3647 2007 ICC http://dx.doi.org/10.1109/ICC.2007.600 conf/icc/2007 db/conf/icc/icc2007.html#WatanabeMBOW07