Differential space-time block coding apparatus with high transmission rate and method thereof

摘要

Disclosed is a differential space-time block coding apparatus with a high transmission rate in a wireless communication system employing multiple transmit antennas and a method thereof. The differential space-time block coding method includes the steps of, when elements of a transmission matrix B₄₃^v are transmitted in a predetermined block (a v^th block) through a predetermined transmit antenna at a predetermined time, modulating a symbol S_v of inputted binary data to a symbol S_v+1, creating a matrix S₄₄^v+1 in a block (a (v+1)^th block) following the predetermined block by substituting the modulated symbol for the matrix P₄₄, and then, in order to perform a differential encoding function, multiplying the matrix B₄₃^v by the matrix S₄₄^v+1 so as to calculate a new matrix B₄₃^v+1 to be transmitted in the (v+1)^th block.