New SNR Adaptive Sphere Decoding Algorithm
Qiao Peng-peng · Video Engineering · 2012
In view of Multiple Input Multiple Output(MIMO) wireless communication systems,sphere decoding algorithm in low SNR region is in possession of the higher complexity.An SNR adaptive limited constellation sphere decoding algorithm is presented,which combines with semi-definite relaxation.Simulation results show that the proposed algorithm can reduce the complexity of the algorithm significantly at low signal to noise ratio area compared with the existed SDA,and the BER performance largely close to optimal SDA.