Kenichi Kobayashi Tomoaki Ohtsuki Toshinobu Kaneko MIMO Systems in the Presence of Feedback Delay. 829-836 2008 91-B IEICE Transactions 3 http://dx.doi.org/10.1093/ietcom/e91-b.3.829 db/journals/ieicet/ieicet91b.html#KobayashiOK08