low-complexity in rank extensible code book design for MU-MIMO and SU-MIMO system, and how to support the pre-coding matrix feedback

摘要

In a wireless communication method, and a mobile terminal to support feedback multiuser MIMO (Multiple-Input and Multiple-Output) system and a pre-coding matrix of the single-user MIMO system. Wireless communication method may also, in the mobile terminal, and comprises a step of obtaining the channel state information including at least information gain and relative phase information. Furthermore, it comprises a step of generating a quantization using the gain information and the relative phase information between at least antenna elements precoding matrix comprising a group of bits b _{g, p1,} p2 and p3. The method also includes the steps of selecting an optimal precoding matrix from the generated precoding matrix and transmitting the bit sequence representing the precoding matrix selected to the base station.