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Registered TRANSMITTING APPARATUS FOR TRANSMITTING IN A MULTI-CARRIER SYSTEM USING MULTIPLE ANTENNAS AN
- Inventors
- Oh Jong-Ee, Dongseung Kwon
- Application No.
- 12096520 (2006.12.04)
- Publication No.
- 20080298225 (2008.12.04)
- Registration No.
- 7773500 (2010.08.10)
- Country
- UNITED STATES
- Project Code
- 05MM1100, Research on 4G Mobile Communications Technology, Hwang Seung Ku
- Abstract
- 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.
- KSP Keywords
- Carrier system, Linear precoding, Multi-Carrier, Multi-carrier systems, Space diversity, complex field, frequency diversity, lattice reduction(LR), multiple antennas, signal based, system complexity