Title :
FPGA implementation of multiplierless M-QAM modulator
Author :
Klymyshyn, D.M. ; Haluzan, D.T.
Author_Institution :
TRLabs., Saskatoon, Sask., Canada
fDate :
5/9/2002 12:00:00 AM
Abstract :
Adaptive multilevel QAM (M-QAM) modulation can increase throughput in a wireless packet data network. A technique is discussed for efficiently realising M-QAM modulators on field programmable gate arrays (FPGAs) using ´multiplierless´ finite impulse response (FIR) filters with carry-save addition and canonic signed-digit coefficients. An adaptive M-QAM modulator supporting 4, 16, 64 and 256-QAM is presented
Keywords :
FIR filters; adaptive modulation; data communication; field programmable gate arrays; modulators; packet radio networks; quadrature amplitude modulation; 16-QAM; 256-QAM; 4-QAM; 64-QAM; FIR filters; FPGA implementation; adaptive M-QAM modulator; adaptive multilevel QAM; canonic signed-digit coefficients; carry-save addition; field programmable gate arrays; finite impulse response filters; multiplierless M-QAM modulator; throughput; wireless packet data network;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020323
