등록 TRANSMITTING APPARATUS FOR TRANSMITTING IN A MULTI-CARRIER SYSTEM USING MULTIPLE ANTENNAS AN

이미지 확대

TRANSMITTING APPARATUS FOR TRANSMITTING IN A MULTI-CARRIER SYSTEM USING MULTIPLE ANTENNAS AN

발명자

Oh Jong-Ee, Dongseung Kwon

출원번호

12096520 (2006.12.04)

공개번호

20080298225 (2008.12.04)

등록번호

7773500 (2010.08.10)

출원국

UNITED STATES

협약과제

05MM1100, Research on 4G Mobile Communications Technology, Hwang Seung Ku

초록

A transmitting apparatus and receiving apparatus of a multi-carrier system using multiple antennas is proposed. A linear complex field (LCF) encoder performs linear precoding of input signals to be transmitted using a linear complex matrix based on the number of antennas and the number of subcarriers, and a subcarrier allocator allocates a subcarrier to each precoded signal. A transmitter transmits the signals through the multiple antennas. In a receiving apparatus, a subcarrier de-allocator extracts a linear-precoded signal by de-allocating a subcarrier of the received signal, and an LCF decoder outputs a bit reliability of the received signal based on the number m of antennas and the number n of subcarriers. Performance may be improved by using space diversity using multiple antennas and frequency diversity using OFDMA, and system complexity may be reduced by using a lattice reduction and a 2-branch Chase decoder.