Exploitation of Extra Diversity in UWB MB-OFDM System
INHA UNIV INCHON (KOREA)
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This paper describes and analyzes the performance of MB-OFDM Multi-Band OFDM UWB Ultra-WideBand system that is suggested as one of standards in IEEE 802.15 TG3a for UWB application. UWB channel model that has been contributed in IEEE 802.15 SG3a is a wideband channel model of 6GHz bandwidth, so we modify it to have 3 subband channels that are obtained by filtering conventional UWB channel considering center frequency and bandwidth of each subband. We demonstrate performances of MB-OFDM system under the UWB channel by simulation and verify the frequency and time domain diversity gains. We also compare the performance of a proposed SFBC Space-Frequency Block Code MB-OFDM system with that of conventional MB-OFDM system and manifest the extra spatial diversity gain of MB-OFDM UWB system. Simulation results show SFBC MB-OFDM system outperforms conventional MB-OFDM system about 1.5 dB of EbNo at target BER of 10-4.
- Radiofrequency Wave Propagation