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Advances in Digital Signal Processing: New Applications and Efficient Implementations

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Computing and Artificial Intelligence".

Deadline for manuscript submissions: 20 December 2024 | Viewed by 1875

Special Issue Editor


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Guest Editor
Technical Sciences Academy of Romania—ASTR, Academy of Romanian Scientists—AOSR, Faculty of Electronics, Telecommunication and Information Technology, “Gheorghe Asachi“ Technical University of Iasi, 700506 Iasi, Romania
Interests: digital signal processing (DSP); adaptive signal processing; blind equalization/identification; fast computational algorithms; parallel and VLSI algorithms and architectures for communications and DSP; high-level DSP design
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues, 

In the new era of digital revolution, new advanced DSP applications have appeared. The advances in modern DSP applications, such as multimedia, big data, IoT, etc., have increased the importance of the optimization and efficient implementation of DSP algorithms and architectures, both for a VLSI or a software  VLSI implementation. We can say that they represent an essential part of the research in such modern applications.

For real time implementations of such modern DSP applications, an efficient optimization of such algorithms and architectures for an efficient VLSI implementation are often a critical and challenging issue. For example, real-time multimedia applications have increasingly greater performance requirements due to data processing and transmission of huge data volumes at high speeds, with resource constraints specific to portable devices.

This Special Issue focuses on papers that demonstrate how these design challenges can be overcome using innovative solutions.

Topics of interest for this Special Issue include but are not limited to:

  • VLSI signal processing;
  • Signal processing methods for an efficient implementation;
  • Optimization of the VLSI implementation of multimedia blocks;
  • Low-power circuits and systems for DSP applications;
  • Efficient adaptive/learning algorithms (low complexity/fast versions, optimized parameters, etc.);
  • Tensor-based signal processing (efficient decomposition methods, low-rank approximations, etc.);
  • Sparsity-aware algorithms.

Prof. Dr. Doru Florin Chiper
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • VLSI signal processing
  • signal processing methods
  • efficient implementation
  • multimedia blocks
  • low power circuits and systems
  • efficient adaptive algorithms
  • learning algorithms
  • efficient decomposition methods
  • low-rank approximations
  • sparsity exploitation

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Published Papers (2 papers)

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Research

26 pages, 1137 KiB  
Article
A Novel Low-Complexity and Parallel Algorithm for DCT IV Transform and Its GPU Implementation
by Doru Florin Chiper and Dan Marius Dobrea
Appl. Sci. 2024, 14(17), 7491; https://doi.org/10.3390/app14177491 - 24 Aug 2024
Viewed by 720
Abstract
This study proposes a novel factorization method for the DCT IV algorithm that allows for breaking it into four or eight sections that can be run in parallel. Moreover, the arithmetic complexity has been significantly reduced. Based on the proposed new algorithm for [...] Read more.
This study proposes a novel factorization method for the DCT IV algorithm that allows for breaking it into four or eight sections that can be run in parallel. Moreover, the arithmetic complexity has been significantly reduced. Based on the proposed new algorithm for DCT IV, the speed performance has been improved substantially. The performance of this algorithm was verified using two different GPU systems produced by the NVIDIA company. The experimental results show that the novel proposed DCT algorithm achieves an impressive reduction in the total processing time. The proposed method is very efficient, improving the algorithm speed by more than 4-times—that was expected by segmenting the DCT algorithm into four sections running in parallel. The speed improvements are about five-times higher—at least 5.41 on Jetson AGX Xavier, and 10.11 on Jetson Orin Nano—if we compare with the classical implementation (based on a sequential approach) of DCT IV. Using a parallel formulation with eight sections running in parallel, the improvement in speed performance is even higher, at least 8.08-times on Jetson AGX Xavier and 11.81-times on Jetson Orin Nano. Full article
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17 pages, 1050 KiB  
Article
Kalman Filter Using a Third-Order Tensorial Decomposition of the Impulse Response
by Laura-Maria Dogariu, Constantin Paleologu, Jacob Benesty and Felix Albu
Appl. Sci. 2024, 14(11), 4507; https://doi.org/10.3390/app14114507 - 24 May 2024
Viewed by 538
Abstract
For system identification problems associated with long-length impulse responses, the recently developed decomposition-based technique that relies on a third-order tensor (TOT) framework represents a reliable choice. It is based on a combination of three shorter filters, which merge their estimates in tandem with [...] Read more.
For system identification problems associated with long-length impulse responses, the recently developed decomposition-based technique that relies on a third-order tensor (TOT) framework represents a reliable choice. It is based on a combination of three shorter filters, which merge their estimates in tandem with the Kronecker product. In this way, the global impulse response is modeled in a more efficient manner, with a significantly reduced parameter space (i.e., fewer coefficients). In this paper, we further develop a Kalman filter based on the TOT decomposition method. As compared to the recently designed recursive least-squares (RLS) counterpart, the proposed Kalman filter achieves superior performance in terms of the main criteria (e.g., tracking and accuracy). In addition, it significantly outperforms the conventional Kalman filter, while also having a lower computational complexity. Simulation results obtained in the context of echo cancellation support the theoretical framework and the related advantages. Full article
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