Patent ID: 8750405

Claim:
A multi-antenna codebook selection modulation method for solving weak scattering, comprising: (1) an equivalent channel response of downlink channel being obtained by transmitting pilot signal, a pre-coding matrix being selected according to the equivalent channel response, and a transmitting end obtaining a pre-coding matrix index (PMI); (2) the transmitting end allocating information with bit length K to each antenna according to requirements of code rate R and code length N of each antenna and performs coding modulation process on the information, then performing D-dimensional rotation modulation process on an in-phase component and a quadrature-phase component of a symbol, which is obtained by the coding modulation process, according to a preset rotation angle; (3) performing a layered space interleaving process on signal in path I or path Q on all Nt antennas after the D-dimensional rotation modulation process respectively; (4) the transmitting end selecting the pre-coding matrix according to the PMI obtained by step (1), and performing pre-coding operation on a symbol which is processed by the layered space interleaving process; (5) after receiving the data, the receiving end performing pre-decoding process on the data of the receiving end according to the equivalent channel response in step (1); and (6) the receiving end performing a layered space de-interleaving process on space signals in path I or path Q of pre-decoded data on Nr receiving antennas respectively; and performing rotation demodulation and decoding computing on data obtained by the layered space de-interleaving process on each receiving antenna so as to obtain required information; wherein D, Nr and Nt are natural numbers; the Nt is number of transmitting antennas and Nr is number of receiving antennas.