APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING DATA BY USING A TRANSMISSION DIVERSITY METHOD USING A MULTIPLE ANTENNAS IN A MOBILE COMMUNICATION SYSTEM, CAPABLE OF MAXIMIZING TRANSMISSION CAPACITY

摘要

PURPOSE: An apparatus and a method for transmitting/receiving data by using a transmission diversity method using multiple antennas in a mobile communication system, capable of maximizing transmission capacity, are provided to simplify a transmission and reception structure and reduce the amount of feedback data by simultaneously transmitting data in an SDMA(Spatial Duplex Multiple Access) method. CONSTITUTION: A feedback information processor(313) interprets feedback information received from a plurality of receivers and determines receivers whose feedback information has orthogonality and added capacity is the maximum transmission amount when simultaneously transmitted, and then, determines feedback information of a receiver having the maximum transmission amount as a weight value. A signal transmitter(311) applies the determined weight value to each antenna and transmits data to the determined receivers. A signal receiver(331) despreads and descrambles a reception reference channel signal. A feedback information generator(333) measures channel characteristics with the despread and descrambled reference channel signal, and determines a weight value having orthogonality with respect to each of pre-set number of weight values and a weight value having a maximum signal-to-interference noise ratio.