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- research-articleJune 2024
Noise modelling and mitigation for broadband in‐door power line communication systems
- Ogunlade M. Adegoke,
- Saheed Lekan Gbadamosi,
- Babatunde S. Adejumobi,
- Israel E. Owolabi,
- Wasiu Adeyemi Oke,
- Nnamdi I. Nwulu
AbstractCommunication systems are greatly hampered by many disruptive noises in powerline communication systems (PLC), which come with strong interference, resulting in the malfunction of PLC systems. Hence, there is a need to model noise and its effect ...
The paper discusses noise modelling and mitigation techniques for indoor broadband powerline communication systems, utilizing frequency domain measurements and an analytical noise model. It introduces a spatial modulation powerline communication (SM‐PLC) ...
- research-articleJanuary 2022
Robust Tensor Completion: Equivalent Surrogates, Error Bounds, and Algorithms
SIAM Journal on Imaging Sciences (SJISBI), Volume 15, Issue 2Pages 625–669https://doi.org/10.1137/21M1429539Robust low-rank tensor completion (RTC) problems have received considerable attention in recent years such as in signal processing and computer vision. In this paper, we focus on the bound constrained RTC problem for third-order tensors which recovers a ...
- extended-abstractMarch 2022
Noise Robust Variable Step-Size APMCC Algorithm for Underwater Acoustic Channel Estimation
WUWNet '21: Proceedings of the 15th International Conference on Underwater Networks & SystemsArticle No.: 34, Pages 1–2https://doi.org/10.1145/3491315.3491362To improve the performance of underwater acoustic (UWA) estimation under impulse noise, this paper proposes a noise robust variable step-size APMCC (RVSS-APMCC) algorithm. The algorithm combines the improved modified Gaussian function to establish the ...
- research-articleJanuary 2021
Design of filter for image de-noising using discrete wavelet transform for ASIP
International Journal of Computational Vision and Robotics (IJCVR), Volume 11, Issue 2Pages 201–213https://doi.org/10.1504/ijcvr.2021.113400Application specific instruction-set processors (ASIP) is a customised processor for user specific application. Though a significant research has been done on this, still it is most promising technology, due to lack of efficient methodologies for ...
- research-articleJanuary 2020
Hybrid fuzzy logic and gravitational search algorithm-based multiple filters for image restoration
International Journal of Data Analysis Techniques and Strategies (IJDATS), Volume 12, Issue 1Pages 76–97https://doi.org/10.1504/ijdats.2020.105182In this paper, we present a multiple image filters for removal of impulse noises from test images. It utilises fuzzy logic (FL) approach to design a noise detector (ND) optimised by gravitational search algorithm (GSA) and utilises median filter (MF) for ...
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- research-articleJanuary 2020
Design of protograph codes for additive white symmetric alpha‐stable noise channels
The protograph low‐density parity‐check (LDPC) codes possess many attractive properties, such as the low encoding/decoding complexity and better error floor performance, and hence have been successfully applied to different types of communication and ...
- research-articleJanuary 2020
Influence of impulsive noise from lifts on orthogonal frequency‐division multiplexing digital radio mondiale signals
Wireless communications are constantly growing with the aim of providing solutions in complex scenarios, such as industrial environments and indoor locations, where impulsive noise sources interfere with the desired signal. Orthogonal frequency‐division ...
- research-articleOctober 2019
Blind digital modulation classification for STBC‐OFDM system in presence of CFO and channels estimation errors
IET Communications (CMU2), Volume 13, Issue 17Pages 2827–2833https://doi.org/10.1049/iet-com.2019.0362Here, the authors propose a robust blind digital modulation classification (BDMC) algorithm for space time block coding (STBC)‐based MIMO‐OFDM system in the presence of carrier frequency offset (CFO) and channel estimation errors. Previous papers ...
- research-articleApril 2019
Performance evaluation of T‐COFDM under combined noise in PLC with log‐normal channel gain using exact derived noise distributions
In this study, the performance analyses of the proposed turbo‐coded orthogonal frequency division multiplexing (T‐COFDM) are investigated over the power‐line communication with lognormal channel gain based on derived effective complex‐valued ratio ...
- research-articleApril 2019
Novel non‐linear demapper for soft decision decoder of LDPC codes in impulsive noise
Impulsive noises severely degrade the performance of a communication system. This study deals with the performance of the soft decision decoder for low‐density parity‐check codes over impulsive noise channels. To simplify the calculation of log ...
- research-articleApril 2019
Performance analysis of coordinate interleaved PLC system with Rayleigh channel gain under Nakagami‐m additive noise
Power line communication (PLC) is an emerging field of communication that makes use of the existing power line infrastructure for the transmission of data and power. However, the presence of additive and multiplicative power line noises deteriorate the ...
- research-articleJanuary 2019
Adaptive multi-threshold based de-noising filter for medical image applications
International Journal of Computational Vision and Robotics (IJCVR), Volume 9, Issue 3Pages 272–292https://doi.org/10.1504/ijcvr.2019.099439Medical image processing is the emerging research area and many researchers contributed to medical image processing by proposing new techniques for medical image enhancement and abnormality detection. Interpretation of medical images is a challenging ...
- research-articleJanuary 2019
Non-Lipschitz Models for Image Restoration with Impulse Noise Removal
SIAM Journal on Imaging Sciences (SJISBI), Volume 12, Issue 1Pages 420–458https://doi.org/10.1137/18M117769XImpulse noise is a special type of noise which corrupts a portion of the image pixels while keeping the others unaffected. L$_1$TV, L$_1$Nonconvex, and NonconvexTV are three common variational models for impulse noise removal. However, non-Lipschitz cases ...
- research-articleJanuary 2019
Cascade Non-linear Filters for Image Recovery
Procedia Computer Science (PROCS), Volume 150, Issue CPages 109–115https://doi.org/10.1016/j.procs.2019.02.023AbstractNon-linear filtering is considered as a problem of cancelling non-Gaussian noise from the additive mixture of this noise and the initial signal. This task is formulated within the framework of the “black box” principle, when the non-linear filter ...
- research-articleJanuary 2018
Robust multipath channel estimation in the presence of impulsive noise
Power‐line communications (PLCs) endure a severe transmission channel distortion due to Gaussian noise, impulsive noise, and multipath self‐interference. Conventional transmission models with white Gaussian noise would be very inappropriate and impair the ...
- research-articleDecember 2017
A Novel Three-phase Approach for Highly Corrupted Color Images
CSAI '17: Proceedings of the 2017 International Conference on Computer Science and Artificial IntelligencePages 109–113https://doi.org/10.1145/3168390.3168445To reduce impulse noise in color images, a novel three-phase iterative filter is presented in this paper. The proposed filter first detects noisy components in each color channel by applying the detection scheme of the adaptive median filter (AMF). It ...
- research-articleSeptember 2017
Compressive channel estimation for universal filtered multi‐carrier system in high‐speed scenarios
IET Communications (CMU2), Volume 11, Issue 15Pages 2274–2281https://doi.org/10.1049/iet-com.2017.0308Due to the high mobility of communication, channel times can vary rapidly and system performance can be decreased. In this study, pseudo‐random noise is used as the guard interval and the training sequence in the time domain in order to estimate the ...
- research-articleMarch 2016
Performance analysis of orthogonal frequency division multiplexing systems in dispersive indoor power line channels inflicting asynchronous impulsive noise
Hidden semi‐Markov modelling of the asynchronous impulsive noise (IN) encountered in indoor broadband power line communications (PLCs) is investigated by considering the statistical distributions of both the inter‐arrival time and the duration of ...
- research-articleNovember 2015
Weighted Couple Sparse Representation With Classified Regularization for Impulse Noise Removal
IEEE Transactions on Image Processing (TIP), Volume 24, Issue 11Pages 4014–4026https://doi.org/10.1109/TIP.2015.2456432Many impulse noise (IN) reduction methods suffer from two obstacles, the improper noise detectors and imperfect filters they used. To address such issue, in this paper, a weighted couple sparse representation model is presented to remove IN. In the ...
- research-articleJuly 2015
Blind Inpainting Using <inline-formula> <tex-math notation="LaTeX">$\ell _{0}$ </tex-math></inline-formula> and Total Variation Regularization
IEEE Transactions on Image Processing (TIP), Volume 24, Issue 7Pages 2239–2253https://doi.org/10.1109/TIP.2015.2417505In this paper, we address the problem of image reconstruction with missing pixels or corrupted with impulse noise, when the locations of the corrupted pixels are not known. A logarithmic transformation is applied to convert the multiplication between the ...