Paper Info
Title
Robustness improvement of compact predistorters in a CO-OFDM system using semiconductor optical amplifiers
Abstract
This paper focuses on digital signal processing techniques compensating the non-linear effects inherent to optical modulation or amplification within a coherent optical orthogonal frequency division multiplexing (CO-OFDM) transmitter featuring a semiconductor optical amplifier (SOA). Two complementary approaches are specifically considered: crest factor reduction and linearization using a digital baseband predistortion. Two possible implementations are presented for the digital predistortion block. One is the basic solution of static compensation; the other consists in a parallel two-box digital polynomial predistorter (PTB) combining, in parallel, a static nonlinear block with a memory polynomial predistorter. Moreover, we show that a linearization of the dynamic behavior of the transmitter, in addition to peak-to-average power ratio (PAPR) reduction, offers better performance. The robustness of the predistorters or of the combined predistorter/PAPR reduction blocks is assessed for various scenarios. Finally, we propose solutions to improve robustness via multipoint identification or switching strategies for predistortion.
Year
DOI
Venue
2017
10.1109/ICM.2017.8268828
2017 29th International Conference on Microelectronics (ICM)
Keywords
Field
DocType
Coherent Optical OFDM,Semiconductor optical amplifier (SOA),Digital Predistortion,Linearization,PAPR reduction,Robustness analysis,Error Vector Magnitude (EVM)
Optical amplifier,Baseband,Digital signal processing,Computer science,Electronic engineering,Modulation,Robustness (computer science),Crest factor,Orthogonal frequency-division multiplexing,Predistortion
Conference
ISSN
ISBN
Citations 
2159-1679
978-1-5386-4050-0
0
PageRank 
References 
Authors
0.34
2
6
Name
Order
Citations
PageRank
Mohamad Younes100.34
M. Telescu292.48
N. Tanguy3638.26
Chérif El Valid Diouf421.11
Pascal Morel572.56
S. Azou6509.05