Title :
Performance and capacity improvements of OFDM wireless LANs with multiple antennas and subchannel power control
Author :
Gidlund, Mikael ; Åhag, Per
Author_Institution :
Dept. of Inf. Technol. & Media, Mid Sweden Univ., Sweden
fDate :
23 Feb.-1 March 2003
Abstract :
Multiple transmit-and-receive antennas can be used in orthogonal frequency division multiplexing (OFDM) systems to improve communication quality and capacity. In this paper, we investigate the performance of a multiple antenna system with subchannel power control for OFDM Wireless LAN. Furthermore, we employed a turbo product code at the encoder to further enhance the quality of transmission for high data rate WLAN such as the ETSI BRAN HIPERLAN/2. Simulation results show that for a BER of 10-4, we gain 4.4 dB for the proposed scheme with turbo block codes and subchannel power control compared to the standardized 5 GHz OFDM wireless LANs.
Keywords :
OFDM modulation; antenna arrays; block codes; channel capacity; power control; receiving antennas; transmitting antennas; turbo codes; wireless LAN; 10-4 bits; 4.4 dB; BER; ETSI BRAN HIPERLAN/2; OFDM WLAN; bit error rate; block turbo codes; communication capacity; communication quality; encoder; multiple receive antennas; multiple transmit antennas; orthogonal frequency division multiplexing; subchannel power control; transmission quality; turbo product codes; wireless local area network; Fading; Information technology; Local area networks; Mathematics; OFDM; Power control; Receiving antennas; Telecommunication standards; Transmitting antennas; Wireless LAN;
Conference_Titel :
Telecommunications, 2003. ICT 2003. 10th International Conference on
Print_ISBN :
0-7803-7661-7
DOI :
10.1109/ICTEL.2003.1191641
