Ki-nam Kim, Jin-Ho Kim, Jung-Hoon Song, Sung-Joon Cho
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Improvement of the transmission efficiency with transmit diversity scheme in multi-band OFDM systems
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
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