Title :
Linewidth-tolerant and low-complexity two-stage carrier phase estimation using QPSK constellation transformation for 112 Gb/s PM 16-QAM systems
Author :
Jian Hong Ke ; Kang Ping Zhong ; Cartledge, J.C.
Author_Institution :
Queen´s Univ., Kingston, ON, Canada
Abstract :
The performance of QPSK constellation transformation based two-stage carrier phase estimation algorithms is assessed for 16-ary quadrature-amplitude-modulation. Experimentally the linewidth tolerance of the algorithms is shown to be comparable to the blind phase search algorithm, but with a reduction in the hardware complexity by factors of about 3-8.
Keywords :
optical communication; phase estimation; quadrature amplitude modulation; quadrature phase shift keying; 16-ary quadrature-amplitude-modulation; PM 16-QAM systems; QPSK constellation transformation; bit rate 112 Gbit/s; blind phase search algorithm; hardware complexity; linewidth tolerance; low-complexity; two-stage carrier phase estimation; Bit error rate; Complexity theory; Optical noise; Partitioning algorithms; Phase shift keying; Signal processing algorithms; Signal to noise ratio;
Conference_Titel :
Optical Communications (ECOC), 2012 38th European Conference and Exhibition on
Conference_Location :
Amsterdam
