Based　on　the　subspace　method,　a　closed-form　CDMA　signal　and　DOA　estimation　approach　without　the　knowledge　of　space-time　channel　and　training　sequence　is　presented　in　this　paper.　An　auxiliary　matrix　is　constructed　by　exploiting　the　special　structure　of　the　antenna　array.　Then　the　symbols　instead　of　their　signal　subspace　are　achieved　by　eigen　decomposition　of　the　auxiliary　matrix.　Therefore,　the　puzzle　of　separating　the　different　users＇　signal　from　their　signal　subspace　in　conventional　blind　symbol　estimation　method　is　avoided.　In　comparison　with　conventional　space-time　linear　multiuser　detector,　in　which　the　knowledge　of　space-time　channel　is　assumed　to　be　known,　the　proposed　method　has　the　advantage　of　lower　computation　without　degrading　the　near-far　resistance　performance.　Finally,　numeral　simulations　are　presented.