Title :
Multiplier-Free Joint Carrier Recovery for 16-QAM Synchronous or Agile Burst Receivers
Author :
Tselniker, Igor ; Tolmachev, Alex ; Nazarathy, Moshe
Author_Institution :
Technion - Israel Inst. of Technolgy, Haifa, Israel
Abstract :
Multiplierless multi-symbol delay detector, recently demonstrated in FPGA for QPSK and 16-QAM at 25 Gbaud for phase recovery, is augmented here to also mitigate frequency offset exceeding half the baudrate and chirp <;80 GHz/us, also multiplier-free (just simple additions/logic operations) - applicable to synchronous and burst-receivers.
Keywords :
field programmable gate arrays; optical receivers; quadrature amplitude modulation; quadrature phase shift keying; 16-QAM synchronous receivers; FPGA; QPSK; agile burst receivers; logic operation; multiplier-free joint carrier recovery; multiplierless multisymbol delay detector; phase recovery; Bit error rate; Chirp; Optical noise; Optical receivers; Phase noise; Signal to noise ratio; Optically coherent detection; carrier frequency offset (CFO); frequency offset estimation; multi-symbol delay detection (MSDD); multi-symbol phase estimation (MSPE); phase estimation; phase recovery;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2282311
