scholarly journals A spectrally-efficient linear polarization coding scheme for fiber nonlinearity compensation in CO-OFDM systems

2017 ◽  
Author(s):  
O. S. Sunish Kumar ◽  
O. A. Dobre ◽  
R. Venkatesan ◽  
S. K. Wilson ◽  
O. Omomukuyo ◽  
...  
Keyword(s):  
Linear Polarization ◽  
Ofdm Systems ◽  
Nonlinearity Compensation ◽  
Fiber Nonlinearity ◽  
Coding Scheme ◽  
Polarization Coding ◽  
Spectrally Efficient

Digital Fiber Nonlinearity Compensation: Toward 1-Tb/s transport

2014 ◽  
Vol 31 (2) ◽  
pp. 46-56 ◽  
Author(s):  
Liang B. Du ◽  
Danish Rafique ◽  
Antonio Napoli ◽  
Bernhard Spinnler ◽  
Andrew D. Ellis ◽  
...  
Keyword(s):  
Nonlinearity Compensation ◽  
Fiber Nonlinearity

Waveband-Shift-Free Optical Phase Conjugator for Spectrally Efficient Fiber Nonlinearity Mitigation

2018 ◽  
Vol 36 (6) ◽  
pp. 1309-1317 ◽  
Author(s):  
Isaac Sackey ◽  
Carsten Schmidt-Langhorst ◽  
Robert Elschner ◽  
Tomoyuki Kato ◽  
Takahito Tanimura ◽  
...  
Keyword(s):  
Optical Phase ◽  
Fiber Nonlinearity ◽  
Spectrally Efficient

scholarly journals NOMA for Multinumerology OFDM Systems

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Ayman T. Abusabah ◽  
Huseyin Arslan
Keyword(s):  
Orthogonal Frequency Division Multiplexing ◽  
Multiple Access ◽  
Frequency Division ◽  
Ofdm Systems ◽  
Superposition Coding ◽  
Promising Technique ◽  
Successive Interference Cancelation ◽  
Power Domain ◽  
Multiple Access Schemes ◽  
Spectrally Efficient

Nonorthogonal multiple access (NOMA) is a promising technique which outperforms the traditional multiple access schemes in many aspects. It uses superposition coding (SC) to share the available resources among the users and adopts successive interference cancelation (SIC) for multiuser detection (MUD). Detection is performed in power domain where fairness can be supported through appropriate power allocation. Since power domain NOMA utilizes SC at the transmitter and SIC at the receiver, users cannot achieve equal rates and experience higher interference. In this paper, a novel NOMA scheme is proposed for multinumerology orthogonal frequency division multiplexing system, that is, different subcarrier spacings. The scheme uses the nature of mixed numerology systems to reduce the constraints associated with the MUD operation. This scheme not only enhances the fairness among the users but improves the bit error rate performance as well. Although the proposed scheme is less spectrally efficient than conventional NOMA schemes, it is still more spectrally efficient than orthogonal multiple access schemes.

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