Title :
Improvement in dynamic equalization performance of a coherent receiver by CMA gain adaptation
Author :
Ribeiro, V.B. ; Diniz, J.C.M. ; Rosa, E.S. ; Juriollo, A.A. ; de Oliveira, J.C.R.F. ; Bordonalli, A.C.
Author_Institution :
Reconfigurable Opt. Syst. Lab. - LASOR, CPqD, Campinas, Brazil
fDate :
Oct. 29 2011-Nov. 1 2011
Abstract :
The constant modulus algorithm has a relatively slow convergence speed in digital coherent receivers when compared to other algorithms, such as the least mean square. This paper proposes and experimentally demonstrates a simple gain adaptation method that improves the convergence of the dynamic equalizer in an 112 Gb/s PM-QPSK transmission receiver.
Keywords :
equalisers; least mean squares methods; quadrature phase shift keying; radio receivers; CMA gain adaptation; PM-QPSK transmission receiver; coherent receiver; constant modulus algorithm; digital coherent receivers; dynamic equalization performance; dynamic equalizer; least mean square; simple gain adaptation method; Convergence; Heuristic algorithms; Optical noise; Q factor; Receivers; Signal processing algorithms; Signal to noise ratio; 100G coherent systems; constant modulus algorithm; gain adaptation;
Conference_Titel :
Microwave & Optoelectronics Conference (IMOC), 2011 SBMO/IEEE MTT-S International
Conference_Location :
Natal
Print_ISBN :
978-1-4577-1662-1
DOI :
10.1109/IMOC.2011.6169278
