In　this　letter,　a　multiple　antennas-based　truncated　channel　inversion　power　control　(CIPC)　secure　transmission　scheme　with　artificial　noise　(AN)　is　proposed.　Specifically,　the　transmitter　with　multiple　antennas　varies　the　transmit　power　as　per　channel　to　ensure　the　received　signal　power　equals　a　certain　constant　value　{Q}　,　and　uses　the　residual　power　to　transmit　AN　for　interfering　the　eavesdropper.　We　first　derive　the　expression　for　the　probability　of　secure　transmission.　Relying　on　this,　we　then　study　the　optimization　problem　in　terms　of　the　achieved　effective　secrecy　throughput　(EST),　which　quantifies　the　amount　of　information　that　the　transmitter　can　securely　send　to　the　receiver,　subject　to　the　constraints　that　the　probability　of　secure　transmission　is　no　less　than　a　predetermined　value.　The　numerical　results　show　that　increasing　the　transmission　power　will　not　continuously　decrease　the　probability　of　secure　transmission.　Furthermore,　we　find　that　there　exists　an　optimal　{Q}　to　maximize　the　EST　performance,　and　the　optimal　value　of　{Q}　increases　with　the　number　of　antennas.　©　2012　IEEE.