Analysis of Capacity of Imploved Space-Time Block Code Based on MIMO System
Na Wang · Journal of Taiyuan University of Technology · 2012
The anti-intereference ability can be strengthened while the BER can be decreased when STBC is applied to MIMO system.The existed quasi-orthogonal code TBH can implove the system capacity effectively,but the effectiveness is non-ideal when the SNR is very high.In this paper,an imploved quasi-orthogonal code was introduced.Ergodic capacity of the 4X1 systems with the imploved quasi-orthogonal code was deserved.Capacity of the TBH system,orthogonal code system and the improved coding system was compared.The result shows that capacity of the imploved code was much better than that of the existed code.Besides,channel capacity of the improved coding increased with the SNR and number of receiving antennas.