Title :
Performance of pilot-assisted maximum-likelihood sequence detection in a rotated-8QAM coherent optical system
Author :
Zhuoran Xu ; Huanhuan Zheng ; Changyuan Yu ; Pooi-Yuen Kam
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore
Abstract :
We propose and experimentally demonstrate a pilot-assisted, maximum-likelihood sequence detection (PA MLSD) scheme for rotated-8QAM signals, which obviates the need for differential encoding/decoding and improves the bit-error rate performance significantly.
Keywords :
decoding; encoding; error statistics; optical communication equipment; quadrature amplitude modulation; bit-error rate performance; differential decoding; differential encoding; pilot-assisted maximum-likelihood sequence detection; quadrature amplitude modulation; rotated-8QAM coherent optical system; Bit error rate; Distributed feedback devices; Laser feedback; Maximum likelihood decoding; Optical transmitters; Phase noise;
Conference_Titel :
Optical Fibre Technology, 2014 OptoElectronics and Communication Conference and Australian Conference on
Conference_Location :
Melbourne, VIC
