Patent ID: 9337910
Filing Date: 2016-05-10
CPC Classification: H04B

Claim Text:
1. A MIMO (multi-input multi-output) communication system using a pre-coder based on a tight frame, which performs a signal transmitting and receiving process through a transmission device including a plurality of transmission antennas and a reception device including a plurality of reception antennas, wherein the transmission device modulates transmission data on a basis of a transmission combination of the transmission antennas and the pre-coder based on the tight frame and transmits the data to the reception device, wherein the reception device generates a channel matrix for each transmission antenna and a detection matrix corresponding to a pre-coder matrix, demodulates a modulation signal received from the transmission device, extracts a transmission antenna combination and on a corresponding demodulation signal on a basis of a signal level of a reception signal corresponding to each transmission antenna, and generates a reception signal, wherein the pre-coder G based on the tight frame satisfies and wherein the A is a matrix of n (number of rows) x m (number of columns) size of maximizing a certain coefficient.