Title :
A BICMOS PDF notch circuit for FM-DCSK communication over selective channels
Author :
Callegari, Sergio ; Rovatti, Riccardo ; Setti, Gianluca ; Mazzini, G.
Author_Institution :
Dipt. di Elettronica Inf. e Sistemistica, Bologna Univ., Italy
Abstract :
A BICMOS circuit is presented which can be electrically programmed to alter the probability density function of a random/chaotic PAM stream and to create a set of null probability. In an FM-DCSK communication system its adoption ahead of the FM modulator allows to place an interval of reduced power in the spectrum of the wideband transmitted signal in correspondence to the in-band multipath related nulls. The expected performance improvement over selective channels is confirmed by the numerical esteem of the bit error rate as a function of the bit-energy/noise-spectral-density ratio
Keywords :
BiCMOS integrated circuits; chaos; frequency modulation; modulators; notch filters; probability; BICMOS notch circuit; FM modulator; FM-DCSK communication; bit-energy/noise-spectral-density ratio; current comparator; in-band multipath related nulls; null probability; performance improvement; probability density function; random/chaotic PAM stream; selective channels; wideband transmitted signal; BiCMOS integrated circuits; Bit error rate; Chaotic communication; Delay; Frequency modulation; Frequency shift keying; Probability density function; Pulse modulation; Robustness; Wideband;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.858784
