Title :
The optimal BPSK demodulator with a 1-bit A/D front-end
Author_Institution :
Lincoln Lab., MIT, Lexington, MA, USA
Abstract :
An unconventional, simple BPSK demodulator is proposed. The complexity of the conventional BPSK demodulator is reduced by utilizing a 1-bit analog-to-digital (A/D) converter front-end The optimal detection rule is derived for BPSK signals going through the 1-bit A/D front-end. The key element of the optimal demodulation process is a pair of weighting factors that act as phase references. A simple algorithm for estimating the weighting factors is proposed and shown to be effective. Simulations are performed and the results are compared with the conventional BPSK demodulator
Keywords :
analogue-digital conversion; demodulators; optimisation; phase shift keying; signal detection; 1 bit; A/D front-end; BPSK signals; analog-to-digital converter; optimal BPSK demodulator; optimal detection rule; phase references; simulations; weighting factors estimation; Analog-digital conversion; Band pass filters; Binary phase shift keying; Demodulation; Gaussian noise; Laboratories; Phase shift keying; Rails; Sampling methods; Satellites;
Conference_Titel :
Military Communications Conference, 1998. MILCOM 98. Proceedings., IEEE
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-4506-1
DOI :
10.1109/MILCOM.1998.726920
