IEEE Communications Letters
IEEE Communications Letters > 2012 > 16 > 3 > 284 - 287
IEEE Communications Letters > 2012 > 16 > 8 > 1280 - 1283
IEEE Communications Letters > 2012 > 16 > 3 > 284 - 287
IEEE Communications Letters > 2012 > 16 > 8 > 1280 - 1283