Title :
Improvement of the transmission efficiency with transmit diversity scheme in multi-band OFDM systems
Author :
Kim, Ki-Nam ; Kim, Jin-Ho ; Song, Jung-Hoon ; Cho, Sung-Joon
Author_Institution :
Dept. of Inf. & Telecommun. Eng., Hankuk Aviation Univ.
Abstract :
In this paper, multi-band orthogonal frequency division multiplexing (MB-OFDM) system is analyzed as a strong candidate for wireless personal area network (WPAN) standard. MB-OFDM system provides the information data rate from 53.3 Mbps to 480 Mbps according to the used bandwidth. Also, the frequency/time-domain spreading schemes supply the frequency diversity gain but they decrease the transmission efficiency per unit time. To compensate this problem, the transmit diversity scheme is proposed where a symbol is repeatedly transmitted at the space domain. The bit error rate (BER) performance of the proposed system is confirmed by simulation
Keywords :
OFDM modulation; diversity reception; error statistics; personal area networks; time-frequency analysis; ultra wideband communication; 53.3 to 480 Mbit/s; BER performance; UWB communication; bit error rate; frequency-domain spreading scheme; multiband OFDM system; orthogonal frequency division multiplexing; receiving antenna; space-domain spreading scheme; time-domain spreading scheme; transmission efficiency; transmit diversity scheme; transmitting antenna; wireless personal area network; Bandwidth; Communication standards; FCC; Frequency diversity; OFDM; Physical layer; Telecommunications; Time domain analysis; Ultra wideband communication; Wireless communication;
Conference_Titel :
Advanced Communication Technology, 2005, ICACT 2005. The 7th International Conference on
Conference_Location :
Phoenix Park
DOI :
10.1109/ICACT.2005.246000
