A Novel Orthogonal Comb Spectrum Correlation Demodulation Method for the UWB Carrier Envelope Modulation

Considering the frequency spectrum characteristics of the UWB carrier envelope modulation (CEM) scheme which was first introduced in ("The carrier envelope modulation (CEM) scheme for ultra-wideband WPAN communication", IEEE ISCIT 2005, vol.2, pp.837-841, 12-14 Oct. 2005), a novel orthogonal comb spectrum correlation demodulation method is presented in this paper. In order to satisfy the condition of orthogonal comb spectrum, the carrier frequency selection criteria is also derived. The performance analysis and simulation results not only show the feasibility of the new demodulation scheme, but also prove that it has the same performance as the demodulation method in time domain. Comparing with the comber filter demodulation scheme in time domain, the new demodulation scheme has simpler structure, and can be implemented by all digital circuits without RF comber filters