Title :
A Novel Circuit Design Based CORDIC for QAM Modulator
Author :
Wei, Xuenming ; Zhou, Shenyuan
Author_Institution :
Guilin Univ. of Electron. Technol., Guilin
Abstract :
Quadrature amplitude modulation (QAM) is applied extensive in the fields of broadcasting and satellite communication for its high efficiency on power consumption and bandwidth using. The paper introduces a novel circuit which makes use of CORDIC algorithm to implement QAM modulator. The CORDIC module can complete ASK function as well as export two-way orthogonal signal synchronously .By using this character, we can implement high speed QAM modulator with single filter.
Keywords :
amplitude shift keying; digital arithmetic; digital integrated circuits; integrated circuit design; logic design; modulators; quadrature amplitude modulation; ASK function; CORDIC algorithm; coordinate rotation digital computer; high-speed QAM modulator circuit design; quadrature amplitude modulation; two-way orthogonal signal; Bandwidth; Circuit synthesis; Clocks; Digital modulation; Educational institutions; Energy consumption; Filters; Quadrature amplitude modulation; Satellite broadcasting; Satellite communication;
Conference_Titel :
Communications, Circuits and Systems, 2007. ICCCAS 2007. International Conference on
Conference_Location :
Kokura
Print_ISBN :
978-1-4244-1473-4
DOI :
10.1109/ICCCAS.2007.4348261
