Title :
Hardware implementation of optimal CALLUM transmitter
Author :
Jennings, D.J. ; McGeehan, J.P.
Author_Institution :
Centre for Commun. Res., Bristol Univ., UK
fDate :
9/17/1998 12:00:00 AM
Abstract :
The combined analogue locked-loop universal modulator (CALLUM) is a power-efficient, linear transmitter. The optimal CALLUM1 system requires the calculation of nonlinear functions of system variables by a DSP. Such a system has been constructed and results in response to π/4-DQPSK modulation are given
Keywords :
circuit feedback; differential phase shift keying; radio transmitters; signal processing; π/4-DQPSK modulation; CALLUM1 system; combined analogue locked-loop universal modulator; hardware implementation; nonlinear functions; optimal CALLUM transmitter; power-efficient linear transmitter; system variables;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19981315
