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article

A variable‐step size NLMS algorithm based on the cross‐correlation between the squared output error and the near‐end input signal

Fausto Casco‐Sanchez, Miguel Lopez‐Guerrero, Sergio Javier‐Alvarez, Reyna Carolina Medina‐Ramirez

IEEJ Transactions on Electrical and Electronic Engineering > 14 > 8 > 1197 - 1202

In this work, we introduce an adaptive variable‐step size normalized least mean squares algorithm to be used in finite impulse response structures. In our proposal, the step size is adjusted according to the cross‐correlation between the squared output error of the adaptive filter and the near‐end input signal. We show that the step increases or decreases as the error increases or decreases. This...

article

Finite Impulse Response Filter with Square-Exponential Frequency Response

V. A. Fursov, S. A. Bibikov

Pattern Recognition and Image Analysis > 2019 > 29 > 2 > 284-295

This article is devoted to resolving problems with synthesis of FIR-filter restoring distortions such as defocusing. We propose a new parametrical class of finite impulse response filters (FIR-filters) based on a model of the one-dimensional radially-symmetric frequency response. In the proposed synthesis method, the one-dimensional frequency response was composed of square and exponential functions...

article

A Clarke Transformation-Based DFT Phasor and Frequency Algorithm for Wide Frequency Range

Lingwei Zhan, Yong Liu, Yilu Liu

IEEE Transactions on Smart Grid > 2018 > 9 > 1 > 67 - 77

Despite its wide applications in power grid monitoring, the classic discrete Fourier transform (DFT)-based synchrophasor estimation algorithms suffer from significant errors when the power system operates under off-nominal frequency conditions. This phenomenon is caused by spectral leakage of DFT and becomes even more severe for single-phase synchrophasor estimation. To address this issue, a theory...

article

Design and Multiplierless Realization of Maximally Flat Sharpened-CIC Compensators

Goran Molnar, Aljosa Dudarin, Mladen Vucic

IEEE Transactions on Circuits and Systems II: Express Briefs > 2018 > 65 > 1 > 51 - 55

Polynomial sharpening is an efficient technique for improving folding band response of cascaded-integrator-comb (CIC) decimation filters. However, the sharpening of folding bands results in a high passband droop, which is intolerable in many applications. The droop can be reduced by connecting a symmetric finite-impulse-response filter called compensator in the cascade with the sharpened CIC (SCIC)...

article

New Receding Horizon FIR Estimator for Blind Smart Sensing of Velocity via Position Measurements

Choon Ki Ahn, Yuriy S. Shmaliy

IEEE Transactions on Circuits and Systems II: Express Briefs > 2018 > 65 > 1 > 135 - 139

Smart sensors often require that embedded estimators are robust and blind for given averaging horizons. This brief proposes a new receding horizon (RH) finite impulse response (FIR) velocity estimator that fits these needs by utilizing data from

${N}$

recent discrete position measurements with fading weights. The conventional Kalman estimator typically exhibits poor performance and may even diverge...

chapter

FPGA-based accelerator for the scalable underwater acoustic channel emulator

Acta Withamana, Hayato Kondo

OCEANS 2017 – Anchorage > 1 - 4

OCEANS 2017 - Anchorage

Predicting the performance of underwater acoustic (UWA) communication is a big task because the physical properties of the water. Since sea trial is expensive, prior simulation is a common method to enhance the mission success. However, a simulator cannot predict the real UWA modem performance and behavior. Recently, there is an interest of using an UWA channel emulator for gaining insight of the...

article

Maximally Flat-Frequency-Response Multiple-Resonator-Based Harmonic Analysis

Miodrag D. Kusljevic, Josif J. Tomic, Predrag D. Poljak

IEEE Transactions on Instrumentation and Measurement > 2017 > 66 > 12 > 3387 - 3398

This paper presents an improved approach to the recently proposed multiple-resonator-based method for the harmonic analysis that has been provided in the previous papers. Previously, two inherent particular cases have been considered. In these cases, reference points in which estimation is performed are located either in the middle or at the end of the observation interval. The first case exhibits...

article

Wideband Mixed-Domain Multi-Tap Finite-Impulse Response Filtering of Out-of-Band Noise Floor in Watt-Class Digital Transmitters

Ritesh Bhat, Jin Zhou, Harish Krishnaswamy

IEEE Journal of Solid-State Circuits > 2017 > 52 > 12 > 3405 - 3420

A major drawback of digital transmitters (DTX) is the absence of a reconstruction filter after digital-to-analog conversion which causes the baseband quantization noise to get upconverted to radio frequency and amplified at the output of the transmitter. In high power transmitters, this upconverted noise can be so strong as to prevent their use in frequency-division duplexing systems due to receiver...

article

Few Mode Fiber-Based Microwave Photonic Finite Impulse Response Filters

Daniel Vincent Nickel, Carl Villarruel, Kee Koo, Frank Bucholtz, more

Journal of Lightwave Technology > 2017 > 35 > 23 > 5230 - 5236

Single-source few mode fiber-based microwave photonic finite – impulse response filters, which exploit the few mode fibers’ differential mode group delays as the separate optical delay lines of the filter, are experimentally demonstrated and compared to theoretical predictions. These microwave photonic filters exhibit excellent stability compared to equivalent conventional optical delay line filters...

article

Two-Dimensional CS Adaptive FIR Wiener Filtering Algorithm for the Denoising of Satellite Images

Shilpa Suresh, Shyam Lal

IEEE Journal of Selected Topics in Applied Earth Observations and Remote... > 2017 > 10 > 12-1 > 5245 - 5257

In the recent years, researchers are quite much attracted in designing two-dimensional (2-D) adaptive finite-impulse response (FIR) filters driven by an optimization algorithm to self-adjust the filter coefficients, with applications in different domains of research. For signal processing applications, FIR Wiener filters are commonly used for noisy signal restorations by computing the statistical...

article

Mean Squared Error Analysis of Quantizers With Error Feedback

Shuichi Ohno, Teruyuki Shiraki, M. Rizwan Tariq, Masaaki Nagahara

IEEE Transactions on Signal Processing > 2017 > 65 > 22 > 5970 - 5981

Quantization is a fundamental process in digital signal processing.

$\Delta \Sigma$

modulators are often utilized for quantization, which can be easily implemented with static uniform quantizers and error feedback filters. In this paper, we analyze the mean squared quantization error of the quantizer with error feedback including the

$\Delta \Sigma$

modulators. First, we study the quantizer with...

article

A Band-Limited Canonical Piecewise-Linear Function-Based Behavioral Model for Wideband Power Amplifiers

Jianfeng Zhai, Yang Li, Chao Yu, Lei Zhang, more

IEEE Microwave and Wireless Components Letters > 2017 > 27 > 11 > 1022 - 1024

A band-limited canonical piecewise-linear function (CPWL)-based model is proposed for wideband power amplifiers (PAs). The model has a similar structure of the band-limited dynamic deviation reduction (DDR) Volterra series model but without high-order terms and long finite impulse response filters, which are replaced by CPWL. The model has lower complexity and more flexibility than the band-limited...

article

Generalized Rational Sampling Rate Conversion Polyphase FIR Filter

Abhishek Kumar, Suneel Yadav, Neetesh Purohit

IEEE Signal Processing Letters > 2017 > 24 > 11 > 1591 - 1595

In this letter, we derived a mathematical expression that can help in developing a generalized rational sampling rate conversion polyphase finite impulse response filter, for all relatively prime values of the upsampling (

$L$

) and downsampling (

$M$

) factors. In contrast to the existing approaches, the proposed structure efficiently exploits the involved noncausality to eliminate input delay requirements...

article

A Hardware Implementation of the Levinson Routine in a Radio Detector of Cosmic Rays to Improve a Suppression of the Nonstationary RFI

Zbigniew Szadkowski

IEEE Transactions on Nuclear Science > 2017 > 64 > 11 > 2895 - 2903

The radio detector system for ultrahigh-energy cosmic rays in the Pierre Auger Observatory operates in the frequency range 30–80 MHz, which is often contaminated by human-made radio-frequency interferences (RFIs). Several filters were used to suppress the RFI: based on the FFT, an IIR notch filter, and an FIR filter based on the linear prediction. The last refreshes the FIR coefficients calculating...

chapter

Vehicle roll angle and bank angle estimation using FIR filtering

Hong Bae Jeong, Sung Hyun You, Hyun Ho Kang, Choon Ki Ahn

2017 Eighth International Conference on Intelligent Control and Information Processing (ICICIP) > 348 - 352

2017 Eighth International Conference on Intelligent Control and Information Processing (ICICIP)

This paper proposes a novel estimation method using finite impulse response (FIR) filter for the vehicle roll and bank angles. A vehicle model was constructed using the bicycle model and roll motion model and has parameter uncertainties. The proposed method ensures robust to vehicle parameter uncertainties and has no risk of divergence. Furthermore, the proposed method does not need to use expensive...

chapter

Variable fractional rate digital down converter for satellite communication

Gourab Maiti, B Ravi Shankar, T Naresh Kumar, Pradeep Goutam, more

2017 IEEE 9th Latin-American Conference on Communications (LATINCOM) > 1 - 6

2017 IEEE 9th Latin-American Conference on Communications (LATINCOM)

This paper demonstrates an innovative variable fractional rate Digital Down Converter(DDC) architecture for satellite communication where the carrier frequency and output sample rate can be changed dynamically at run time. The proposed algorithm is highly modular and generic so that the DDC can decimate by any fractional ratio i.e. the ADC sampling rate may be any integer or non-integer multiple of...

chapter

A 77-GHz mixed-mode FMCW signal generator based on bang-bang phase detector

Jianfu Lin, Zheng Song, Nan Qi, Woogeun Rhee, more

2017 IEEE Asian Solid-State Circuits Conference (A-SSCC) > 317 - 320

2017 IEEE Asian Solid-State Circuits Conference (A-SSCC)

A 77-GHz mixed-mode frequency-modulated continuous-wave (FMCW) signal generator is proposed based on the bang-bang phase detector (BBPD). Instead of employing a linear digital-to-time converter (DTC), a 1-bit 3^rd-order singleloop ΔΣ modulator (SLDSM3) and a hybrid finite-impulse response (FIR) filter are utilized to suppress the quantization noise induced by the BBPD. Two-stage infinite-impulse response...

chapter

Fractional order differentiator based edge detection in remote sensing images

Koushlendra Kumar Singh, Akarsh Dang, Vandana Kumari, B. K. Singh, more

TENCON 2017 - 2017 IEEE Region 10 Conference > 2885 - 2889

TENCON 2017 - 2017 IEEE Region 10 Conference

Urban object detection places a vital role in urban planning and development. The edge detection algorithms are useful and efficient to perform the object detection. A new edge detection algorithm has been presented in this manuscript. The proposed edge detection algorithm used Chebyshev polynomial based fractional order differentiator. The convolution operation has been performed with fractional...

chapter

Equalization algorithm for GNSS receiver channel by FIR filters

Qi Han, Wenxiang Liu, Wei Xiao, Guangfu Sun

2017 Eighth International Conference on Intelligent Control and Information Processing (ICICIP) > 319 - 324

2017 Eighth International Conference on Intelligent Control and Information Processing (ICICIP)

In the actual GNSS space signal quality monitoring system, the performance of the channel is not ideal, resulting in the signal transmitted to the receiver is inconsistent with the signal received by the antenna. Studying the characteristics and designing the equalization algorithm of the channel could restore the received signal to the real state, which will ensure the quality monitoring results...

chapter

A filterless digital audio class-D amplifier based on grow-left double-edge pulse width modulation

Xiaolei Chen, Haipeng Qu, Zeqi Yu, Chunyang Zhang, more

2017 2nd IEEE International Conference on Integrated Circuits and Microsystems (ICICM) > 231 - 235

2017 2nd IEEE International Conference on Integrated Circuits and Microsystems (ICICM)

A filterless digital audio class-D amplifier (CDA) based on grow-Left double-edge (GLDE) pulse width modulation (PWM) is proposed in this paper. It consists of a high performance fully-digital uniform-sampling PWM (UPWM) modulator and a bridge-tied-load (BTL) power stage. Due to adopt the ternary PWM modulation scheme, the filterless solution without LC low-pass filter becomes possible. Finally, the...

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Search results

A variable‐step size NLMS algorithm based on the cross‐correlation between the squared output error and the near‐end input signal

Finite Impulse Response Filter with Square-Exponential Frequency Response

A Clarke Transformation-Based DFT Phasor and Frequency Algorithm for Wide Frequency Range

Design and Multiplierless Realization of Maximally Flat Sharpened-CIC Compensators

New Receding Horizon FIR Estimator for Blind Smart Sensing of Velocity via Position Measurements

FPGA-based accelerator for the scalable underwater acoustic channel emulator

Maximally Flat-Frequency-Response Multiple-Resonator-Based Harmonic Analysis

Wideband Mixed-Domain Multi-Tap Finite-Impulse Response Filtering of Out-of-Band Noise Floor in Watt-Class Digital Transmitters

Few Mode Fiber-Based Microwave Photonic Finite Impulse Response Filters

Two-Dimensional CS Adaptive FIR Wiener Filtering Algorithm for the Denoising of Satellite Images

Mean Squared Error Analysis of Quantizers With Error Feedback

A Band-Limited Canonical Piecewise-Linear Function-Based Behavioral Model for Wideband Power Amplifiers

Generalized Rational Sampling Rate Conversion Polyphase FIR Filter

A Hardware Implementation of the Levinson Routine in a Radio Detector of Cosmic Rays to Improve a Suppression of the Nonstationary RFI

Vehicle roll angle and bank angle estimation using FIR filtering

Variable fractional rate digital down converter for satellite communication

A 77-GHz mixed-mode FMCW signal generator based on bang-bang phase detector

Fractional order differentiator based edge detection in remote sensing images

Equalization algorithm for GNSS receiver channel by FIR filters

A filterless digital audio class-D amplifier based on grow-left double-edge pulse width modulation

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