Title :
Optimization of 16-ary Quadrature Amplitude Modulation constellations for phase noise impaired channels
Author :
Pfau, Timo ; Liu, Xiang ; Chandrasekhar, S.
Author_Institution :
Bell Labs., Alcatel-Lucent, Murray Hill, NJ, USA
Abstract :
An iterative constellation optimization algorithm is used to find new 16-ary Quadrature Amplitude Modulation (QAM) constellations. The constellations double phase noise tolerance and improve receiver sensitivity by up to 0.3 dB compared to the square 16-QAM constellation.
Keywords :
iterative methods; optical modulation; optical noise; optical receivers; optimisation; phase noise; quadrature amplitude modulation; 16-ary QAM constellation; 16-ary quadrature amplitude modulation constellation; double phase noise tolerance; iterative constellation optimization algorithm; phase noise impaired channel; receiver sensitivity; square 16-QAM constellation; AWGN; Constellation diagram; Optimization; Phase noise; Receivers; Signal to noise ratio;
Conference_Titel :
Optical Communication (ECOC), 2011 37th European Conference and Exhibition on
Conference_Location :
Geneva
Print_ISBN :
978-1-4577-1918-9
