LTE-A系统下码本的设计，此为一套双码本，其中包含线性天线与平面天线阵列的码本设计，每种又有单极性与双极性两种情况。-The LTE-A system, the design of a codebook, this set of double codebook, which contains the codebook design of the linear antenna and the plane antenna array, each have Unipolar and bipolar