Article
Automation & Control Systems
Wei Xue, Xiaoli Luan, Shunyi Zhao, Fei Liu
Summary: In this paper, the Kalman filter and unbiased finite impulse response filter are fused to improve robustness against uncertainties. The proposed influence finite impulse response filter does not require noise statistics and shows adaptive performance in switching between estimates based on operating conditions. It provides state estimates of best accuracy among all the compared methods.
IEEE-CAA JOURNAL OF AUTOMATICA SINICA
(2022)
Article
Computer Science, Hardware & Architecture
Abhijit Chandra, Amit Kumar, Subhabrata Roy
Summary: This paper introduces a new technique for designing FIR filters using genetic algorithms, known as ISOTA. The filter structure has minimal hardware costs and meets the requirements of shifts and only two adders. Comparative studies have been carried out, and the proposed filter has been successfully implemented on the Altera Cyclone IV FPGA board.
INTEGRATION-THE VLSI JOURNAL
(2021)
Article
Computer Science, Information Systems
Chaolin Rao, Xin Lou
Summary: This paper proposes an optimization scheme to minimize the hardware complexity of multiplierless finite impulse response (FIR) filters by jointly optimizing the constant multiplication block and the product accumulation block at the bit-level. The proposed scheme rearranges multiple constant multiplication blocks into sub-blocks and sums the products locally before accumulation to reduce the word-length of the structural adders. It is shown that the symmetric property of linear phase FIR filters can be utilized to further reduce the complexity of constant multiplications. The quantitative analyses indicate that each filter needs to be specifically optimized to achieve the minimum hardware complexity based on its coefficient word-length and filter order.
Article
Automation & Control Systems
Shunyi Zhao, Yuriy S. Shmaliy, Jose A. Andrade-Lucio, Fei Liu
Summary: This article develops a multipass optimal finite impulse response (OFIR) filtering approach for industrial processes with unknown initial conditions and temporary model mismatches. The new double-pass OFIR (DOFIR) and triple-pass OFIR (TOFIR) filters are shown to significantly improve performance close to initial values and have higher robustness compared to existing filtering methods like Kalman, OFIR, and UFIR filters.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2021)
Article
Computer Science, Information Systems
Jung Min Pak
Summary: In this study, a new indoor localization algorithm is proposed to overcome the non-line-of-sight (NLOS) problem. The algorithm utilizes redundant fixed nodes and nearest neighbor (NN) measurements to increase the probability of avoiding NLOS-contaminated measurements. A hybrid filtering structure, consisting of a probabilistic data association (PDA) filter and a finite impulse response (FIR) filter, is used to handle the contaminated measurements.
Article
Computer Science, Information Systems
Jung Min Pak
Summary: This paper introduces a novel single vehicle tracking algorithm for automotive radar systems that enhances reliability by combining PDAF and FIR filter to overcome tracking failures in cluttered environments. The hybrid PDAF/FIR filter (HPFF) demonstrates improved reliability in simulations of preceding vehicle tracking.
Article
Engineering, Electrical & Electronic
Md Shamim Rezaand, Md Maruf Hossain
Summary: This article introduces a nonrecursive true open-loop method for estimation of three-phase grid frequency under harmonics, which combines Clarke and Park transforms with finite-impulse-response low-pass filters. The method is robust and reliable, without any feedback path or accumulation error, and uses a fixed frequency-tuned orthogonal oscillations approach to simplify computational demands. Comparisons with other techniques show improved results, confirmed by simulated and experimental data.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Computer Science, Hardware & Architecture
Kasetty Praveen Kumar, Aniruddha Kanhe
Summary: This paper proposes a generalized hardware architecture for handling the effect of border discontinuities in signal extension. The architecture includes a shift register and LIFO buffers to achieve both symmetric and anti-symmetric extension. The implemented architecture on FPGA shows good performance in terms of clock frequency and resource utilization compared to conventional architectures.
COMPUTERS & ELECTRICAL ENGINEERING
(2022)
Article
Engineering, Electrical & Electronic
Xin Liu, Nirmal Kumar C. Nair
Summary: An enhanced version of the Morlet wavelet-based two-point FIR (MW-FIR) method is proposed to improve immunity against disturbing signals. The estimators are tested and compared with other methods, showing significant improvements in most circumstances, particularly under challenging tests.
IEEE TRANSACTIONS ON SMART GRID
(2022)
Article
Engineering, Electrical & Electronic
Ling Zhang, Chaolin Rao, Xin Lou
Summary: This study proposes a low-power, fully reconfigurable finite impulse response (FIR) filter structure based on common operation sharing. The common operations for all taps, such as coefficient decoding and compensation of negative-coefficient errors, are implemented by shared modules to reduce hardware complexity. A proof-of-concept reconfigurable FIR filter is implemented and fabricated using 40 nm CMOS technology, and chip measurement results demonstrate its superiority in area-delay product and power performance compared to existing methods, making it suitable for low-power filtering applications. The idea of sharing common operations for all taps can benefit existing MUX-based filter techniques for further improvement of power and circuit complexity.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2023)
Article
Engineering, Electrical & Electronic
Luiz Felipe da Silveira Coelho, Lisandro Lovisolo, Michel Pompeu Tcheou
Summary: Implementing FIR adaptive filters with SOPOT arithmetic can lead to simpler hardware design and reduced power consumption. This paper evaluates the effects of SOPOT arithmetic on recursion algorithms of adaptive filters, focusing on convergence rate, numerical stability, and accuracy. SOPOT approximations obtained through the MPGBP algorithm show notable cost-performance trade-off and low computational complexity in the implementation of LMS, NLMS, and RLS algorithms for system identification and change detection.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2022)
Article
Engineering, Electrical & Electronic
Peng Yang, Wei Zhou
Summary: The reduced-dimension adaptive array is a promising method to lower the computational complexity of an adaptive beamformer. By using a set of finite impulse response filters to construct a transformation matrix with lower rank, the receiving data in element space are transformed to beamspace, effectively reducing the adaptive dimension of the array.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Xiangming Xi, Yunjiang Lou
Summary: FIR filters have been instrumental in the development of digital signal processing and beamforming technologies due to their stability and low coefficient sensitivity. Design principles of FIR filters include response error specifications and low implementation complexity. The use of the k-maximum function can describe the sparsity of filter coefficients and transform optimization problems into piecewise linear concave optimization problems to address nonlinearity and nonconvexity. Numerical experiments show the proposed method excels in balancing sparsity and computational efficiency.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2021)
Article
Computer Science, Information Systems
Jung Min Pak
Summary: Positions of unmanned aerial vehicles (UAVs) are typically obtained using the global positioning system (GPS). However, in GPS-denied or GPS-degraded environments, ad hoc networks with flying sensor nodes are used for UAV localization. In this study, we propose a novel three-dimensional (3D) localization algorithm for UAVs in flying ad hoc sensor networks that overcomes the non-line-of-sight condition.
Article
Engineering, Electrical & Electronic
Subhabrata Roy, Abhijit Chandra
Summary: This paper focuses on designing a narrow transition-band FIR filter using a deep learning-based approach, which offers a unified design framework for various FIR filters. Simulation and hardware implementation results demonstrate the effectiveness and advantages of the proposed method.
CIRCUITS SYSTEMS AND SIGNAL PROCESSING
(2022)
