IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 59, no. 10, page. 2916 - 2927, 2011-10
IEEE COMMUNICATIONS LETTERS, vol. 15, no. 9, page. 919 - 921, 2011-09
IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 59, no. 7, page. 1791 - 1795, 2011-07
IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 59, no. 1, page. 95 - 105, 2011-01