BLAST　(Bell　Lab＇s　Layered　Space　Time)　system　theoretically　can　achieve　very　high　spectral　efficiency　by　employing　antenna　arrays　at　both　transmitter　and　receiver.　However,　in　practical　system　BLAST　performance　is　considerably　limited.　In　this　paper,　we　apply　turbo　coding　in　BLAST　and　modify　its　original　structure.　The　new　algorithm　can　provide　significant　improvement　in　the　performance.　Instead　of　ZF,　we　use　the　soft　detection　and　apply　turbo　code　to　process　soft　information.　We　show　that　turbo　code　can　significantly　improve　the　performance　of　the　BLAST　system.　Our　result　again　demonstrates　that　coded　V-BLAST　(vertical　BLAST)　is　a　promising　architecture　to　achieve　the　great　potential　of　BLAST　with　limited　complexity.