Research on FFH/OFDM-based UWB System
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Fast frequency hopping OFDM(FFH/OFDM) could improve anti-fading ability of OFDM by fully utilizing frequency diversity existing in an OFDM symbol,especially when partial subcarriers of OFDM stay in a deep fading state.Great system performance gain can be achieved by extending FFH/OFDM to Ultra wideband channels(FFH/OFDM-UWB).Simulation results and analysis reveal that FFH/OFDM-UWB can achieve 4 dB~7 dB performance gain than OFDM-UWB and perform better as channel multipath delay increases.