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Rahat Ullah
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High security OFDM-PON with a physical layer encryption based on 4D-hyperchaos and dimension coordination optimization
J Zhao, B Liu, Y Mao, R Ullah, J Ren, S Chen, L Jiang, S Han, J Zhang, ...
Optics Express 28 (14), 21236-21246, 2020
452020
Line and ligature segmentation of Urdu Nastaleeq text
I Ahmad, X Wang, R Li, M Ahmed, R Ullah
IEEE access 5, 10924-10940, 2017
342017
Flattened optical multicarrier generation technique for optical line terminal side in next generation WDM-PON supporting high data rate transmission
R Ullah, L Bo, S Ullah, M Yaya, F Tian, MK Khan, X Xiangjun
IEEE Access 6, 6183-6193, 2018
312018
Demand forecasting DBA algorithm for reducing packet delay with efficient bandwidth allocation in XG-PON
KA Memon, KH Mohammadani, N Ain, A Shaikh, S Ullah, Q Zhang, B Das, ...
Electronics 8 (2), 147, 2019
272019
Enhancing the reliability and security of OFDM-PON using modified Lorenz chaos based on the linear properties of FFT
J Shen, B Liu, Y Mao, R Ullah, J Ren, J Zhao, S Chen
Journal of Lightwave Technology 39 (13), 4294-4299, 2021
252021
Ligature based Urdu Nastaleeq sentence recognition using gated bidirectional long short term memory
I Ahmad, X Wang, YH Mao, G Liu, H Ahmad, R Ullah
Cluster Computing 21, 703-714, 2018
252018
Ultra-wide and flattened optical frequency comb generation based on cascaded phase modulator and LiNbO3-MZM offering terahertz bandwidth
S Ullah, R Ullah, Q Zhang, HA Khalid, KA Memon, A Khan, F Tian, ...
IEEE access 8, 76692-76699, 2020
242020
Optical 1.56 Tbps coherent 4-QAM transmission across 60 km SSMF employing OFC scheme
R Ullah, S Ullah, A Ali, M Yaya, S Latif, MK Khan, X Xin
AEU-International Journal of Electronics and Communications 105, 78-84, 2019
232019
A novel concatenated coded modulation based on GFDM for access optical networks
F Tian, D Guo, B Liu, Q Zhang, Q Tian, R Ullah, X Xin
IEEE Photonics Journal 10 (2), 1-8, 2018
232018
5D data iteration in a multi-wavelength OFDM-PON using the hyperchaotic system
M Li, B Liu, R Ullah, J Ren, Y Mao, S Han, J Zhao, R Tang, S Chen, J Ling
Optics Letters 45 (17), 4960-4963, 2020
222020
A novel two-stage broadband Doherty power amplifier for wireless applications
MS Khan, H Zhang, X Wang, R Ullah, I Ahmad, S Shahzad, QA Arain, ...
IEEE Microwave and Wireless Components Letters 28 (1), 40-42, 2017
222017
Optical multi-wavelength source for single feeder fiber using suppressed carrier in high capacity LR-WDM-PON
S Ullah, R Ullah, A Khan, HA Khalid, Q Zhang, Q Tian, F Khan, X Xin
IEEE access 6, 70674-70684, 2018
212018
Application of optical frequency comb in high-capacity long distance optical communication for China-Pakistan economic corridor
Z Latif, Z Jianqiu, R Ullah, ZH Pathan, S Latif
Journal of Optical Communications 38 (3), 331-340, 2017
212017
A 7D cellular neural network based OQAM-FBMC encryption scheme for seven core fiber
S Chen, B Liu, J Ren, Y Mao, R Ullah, X Song, Y Bai, L Jiang, S Han, ...
Journal of Lightwave Technology 39 (22), 7191-7198, 2021
182021
Physical layer data encryption using two-level constellation masking in 3D-CAP-PON
S Chen, B Liu, Y Mao, J Ren, X Song, R Ullah, D Zhao, L Jiang, S Han, ...
Chinese Optics Letters 19 (1), 010601, 2021
182021
Cost effective OLT designed from optical frequency comb generator based EML for1. 22 Tbps wavelength division multiplexed passive optical network
R Ullah, L Bo, S Ullah, M Yaya, F Tian, X Xiangjun
Optical Fiber Technology 43, 49-56, 2018
172018
Ultrawide and tunable self-oscillating optical frequency comb generator based on an optoelectronic oscillator
R Ullah, S Ullah, GZ Khan, Y Mao, J Ren, J Zhao, S Chen, M Li, J Khan
Results in Physics 22, 103849, 2021
162021
Application of optical frequency comb generation with controlled delay circuit for managing the high capacity network system
R Ullah, L Bo, M Yaya, F Tian, A Ali, I Ahmad, MS Khan, X Xiangjun
AEU-International Journal of Electronics and Communications 94, 322-331, 2018
162018
Pulsed laser-based optical frequency comb generator for high capacity wavelength division multiplexed passive optical network supporting 1.2 Tbps
R Ullah, B Liu, Q Zhang, M Saad Khan, I Ahmad, A Ali, R Khan, Q Tian, ...
Optical Engineering 55 (9), 096106-096106, 2016
162016
Optical frequency comb generation with high tone-to-noise ratio for large-capacity wavelength division multiplexed passive optical network
R Ullah, B Liu, Q Zhang, Q Tian, F Tian, Z Qu, C Yan, MS Khan, I Ahmad, ...
Optical Engineering 54 (11), 116102-116102, 2015
162015
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