METHOD OF GENERATING CODEBOOK OF UNIFORM CIRCULAR ARRAY AND ACQUIRING CODEWORD FROM THE CODEBOOK

摘要

the present invention is uniform circular array antenna consisting of a codebook for the design of technical solutions the offer. Each of the code words in the code book are designed to have a constant modulus, the respective columns are orthogonal to each other, have overlapping characteristics. Based on the codebook design, the present invention provides further a method for determining the code word from the base station in a MIMO communication system, a base station uniform circular array is configured to have an antenna, the method comprising: receiving a codeword index information from the user equipment, and the code in accordance with the word index information determining a target code words corresponding to the code word index information from a set of codebooks, wherein a set of codebooks is img file = corresponding respectively to each of the ranks "112013109023003-pct00322.jpg" he = "6 "id =" i0322 "img-format =" jpg "wi =" 8 "/ contains the two codebooks, Dog codebook it is determined based on a Hadamard matrix and a codebook of rank 1 is the first column of the Hadamard matrix are both 1 or are both 1. Compared with the existing Rel-10 codebook, a codebook is designed in accordance with the present invention to reduce the feedback overhead can be improved to the average spectral efficiency of user spectral efficiency and the cell at the edge of the cell. ;