An Improved Blind Multiuser Detection Based on Subspace Tracking
HU Yan-jun · Dianzi xuebao · 2005
The blind multiuser detection based on subspace tracking is studied.An improved detector is proposed.The conventional blind multiuser detectors based on subspac e tracking consider only the in-cell users and neglect the inter-cell interfer ence from out-of-cell users,while the improved blind multiuser detector takes into account both intra-cell and inter-cell interference.The observation space of received signal is partitioned into three subspaces,and the tracking algori t hm is improved to decompose matrix rapidly.The detector exhibits faster converge nce,higher stability and less complexity.