2006•GlobecomRequires access

WLC18-5: Power Spectral Density of Convolutionally Encoded Biorthogonal Pulse Position Modulated Time Hopping UWB Signals

Salvador Villarreal‐Reyes, Robert Michael Edwards

Abstract

The power spectral density (PSD) of convolutionally encoded biorthogonal pulse position modulated (BPPM) time hopping (TH) ultra wideband (UWB) signals is derived. Our formulation is based on a Moore machine representation of the coding procedure and its equivalent Markov chain. The model provides for pseudo random time hopping (TH) traditionally used for multiple access purposes.

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Key concepts: Time-hopping, Biorthogonal system, Pulse-position modulation, Ultra-wideband, Spectral density, Computer science, Frequency-hopping spread spectrum, Markov process