Abstract:

Frequencydomain spectrumoptimalcombination (FDSOC) technology is a novel receiver technology for ultra wideband (UWB) systems. This technology implements the optimal reception of the transmitted data bits in frequency domain by utilizing the fact that the sum of the discrete spectrum components of each UWB pulse is real and the polarity of the sum is variable according to the pulse shape. The principle of FDSOC was analyzed theoretically, and then the performance of FDSOC UWB receiver with frequencydomain subspace channel estimation and UWB Rake receiver with maximum likelihood ( ML) channel estimation were evaluated under UWB channel environment (IEEE 802.15.3a channel model). The simulation results show that FDSOC UWB receiver has good performances.

Key words: ultrawideband, subspace channel estimation, frequencydomain spectrumoptimalcombination