Abstract：In the MIMO systems, the differential feedback is an important strategy for temporally correlated channels. A new adaptive spherical-cap differential feedback algorithm is proposed for the Single-User Multiple Input Single Output (SU-MISO) systems. Firstly, this study effectively utilizes the channels disturbance between two consecutive time instants to design the adaptive differential feedback strategy. Secondly, based on vectors scaling and composition, a new spherical-cap differential codebook algorithm is proposed, which is different from the existing methods for constructing the non-linear model. Finally, the calculation method of spherical-cap radius is deduced by combining spatial distribution of the spherical-cap codebook with channels statistical regularity. The simulation results show that the proposed algorithm can accurately track the channel disturbance and has certain performance improvement than the existing algorithms.
刘学锋, 邹卫霞, 杜光龙, 王一搏. 基于矢量线性运算的自适应球帽差分反馈算法[J]. 电子与信息学报, 2015, 37(3): 753-757.
Liu Xue-Feng, Zou Wei-Xia, Du Guang-Long, Wang Yi-Bo. Adaptive Spherical-cap Differential Feedback Algorithm Based on Linear Operations of Vectors. , 2015, 37(3): 753-757.
2015, Vol. 37 
