An scheme improved on iterative detection algorithm for V-BLAST

Abstract

Traditional detection algorithm for V-BLAST is based on Order Successive Interference Cancellation (OSIC). Using iterative algorithm, the low-diversity substreams are decoded by decisions form of high-diversity substreams, the performance is highly improved at a cost of too much iterative repetition. To decrease computational complexity, an improved scheme for iterative detection method was proposed in this paper. Improving the performance of the first substream greatly and reducing iterative repetition, the improved scheme achieves the balance of performance and computation complexity. Simulation results show that the improve scheme obtains nearly the same performance with that of normal iterative OSIC algorithm, but the computational complexity is low comparatively.