Improved blind multiuser detection algorithm based on subspace tracking
Xiaohui Zhao · Systems engineering and electronics · 2008
An improved blind multiuser detection algorithm based on subspace tracking is proposed to combat the divergence of the OPAST algorithm caused by numerical rounding errors.The proposed method introduces an efficient partial orthogonalization method,pairwise Gram-Schmidt orthogonalization,to mitigate this unsatisfied effect.Simulation results demonstrate that this proposed scheme can keep lower computational complexity,with faster convergence rates,better tracking ability and steady-state performance.