Blind semi-definite programming sequence detection of the 4PAM/16QAM signal in the SIMO system
MA Jin-jin · Journal of Xidian University · 2013
Direct blind sequence detection of the 4PAM/16QAM signal based on semi-definite programming(SDP) for the Single-Input-Multiple-Output(SIMO) system is proposed.In the process of blind SDP detection,firstly we relax the signal blind detection problem in such a way that the relaxed SDP problem is easier to solve;then we solve the SDP problem;thirdly we use randomization strategy to convert the SDP solution to the original blind signal detection problem.The SDP blind detection problem does not depend explicitly or implicitly on the channel order,nor needs the assumption that the parallel channels should be coprime,so it has extensive applicability.Simulation shows that the proposed algorithm demonstrates the advantage of a fast convergence rate and complete independence of channel order estimation and coprime assumption.