| 摘要 |
<p>A method for feeding back channel state information and transmitting data in a multiple antenna system is provided to prevent waste of overall channel capacity and to enhance transmission efficiency by reducing mismatch between a real channel and basis. A method for feeding back channel state information and transmitting data in a multiple antenna system comprises the following several steps. A BS(Base Station) transmits a pilot signal to a terminal wherein the pilot signal is known to the BS and the terminal(S210). The terminal receives the pilot signal through a receipt antenna(S220). The terminal estimates a channel by using the pilot signal and obtains the estimated channel(S230). The terminal calculates basis expressing the estimated channel(S240). The terminal selects the largest column vector(S250). The terminal feeds back an index of the largest column vector regarding weighting matrixes and its size as channel state information(S260).</p> |
