Title :
Performance of carrier phase estimation QPSK optical coherent receiver with N bit resolution ADCS
Author :
Yuanwei Fan ; Jian Chen ; Pu Cao ; Changyuan Yu
Author_Institution :
Sch. of InfoComm Eng., Nanjing Univ. of Posts & Telecommun., Nanjing, China
Abstract :
We study the performance of QPSK optical receiver with carrier phase estimation in the presence of N bit resolution ADCs. Two carrier phase estimation schemes, decision-aided maximum likelihood and M-th power, are considered. Bit error rate (BER) of the receiver with phase noise, amplitude noise and ADC quantization noise is theoretically analyzed. Monte-Carlo (MC) simulation results show that 5 bit ADC resolution is sufficient for both phase estimated schemes with less than 0.2 dB SNR penalty compared with the case of infinite ADC resolution. The results are also verified based on latest version of VPItransmissionMaker while less than 0.5 dB OSNR penalty is observed.
Keywords :
Monte Carlo methods; analogue-digital conversion; error statistics; maximum likelihood estimation; optical modulation; optical receivers; phase estimation; phase noise; quadrature phase shift keying; Monte-Carlo simulation; N bit resolution ADCS; OSNR penalty; QPSK optical coherent receiver; VPItransmissionMaker; amplitude noise; analog-to-digital converter; bit error rate; carrier phase estimation performance; decision-aided maximum likelihood; phase noise; receiver BER; Bit error rate; Optical receivers; Phase estimation; Phase shift keying; Quantization (signal); Signal to noise ratio; analog-to-digital converter (ADC) resolution; carrier phase estimation (CPE); optical coherent receiver;
Conference_Titel :
Optical Communications and Networks (ICOCN), 2014 13th International Conference on
Conference_Location :
Suzhou
DOI :
10.1109/ICOCN.2014.6987116
