High-speed MB-OFDM system with multiple antennas for multimedia communication and home network

The rapid dissemination of digital consumer electronics devices within home and personal area causes increments of multimedia communication and of home networking. In order to meet the demand for low cost, high performance wireless entertainment network, multiple transmitting and receiving antennas can be used in MB-OFDM system to attain high-rate transmission and to offer better quality of service. The MB-OFDM system with multiple antennas increases the transmission rate efficiently with low multiplication operations. With an emphasis on a preamble design for multi-channel separation, we address a channel estimation in MB-OFDM with MIMO antenna system. By properly designing each preamble for multiple antennas to be orthogonal in time domain, the channel estimation can be applied to the MB-OFDM proposal for IEEE 802.15.3a standard in the case of more than two transmitting antennas