Design of 3–5 GHz tunable memristor-based OOK-UWB transmitter

Barraj, Imen; Bahloul, Mohamed A.; Masmoudi, Mohamed

doi:10.1016/j.aeue.2021.153664

Cited by 9 publications

(11 citation statements)

References 26 publications

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“…The Power Mask Losses (PML) in UWB systems are influenced by the waveform of the pulses, as the actual signals may not precisely conform to the FCC rectangular transmission mask. PML is determined by calculating the disparity between the maximum power permitted within a specified frequency band (Pmax) and the average power of the transmitted signals (Pavg) [34].…”

Section: ) Power Loss Maskmentioning

confidence: 99%

“…The spectral efficiency of a pulse is determined by the reduction in channel bandwidth, resulting in a loss of -10 dB. This loss quantifies the spectral efficiency of the pulse [34,35]. The spectral efficiency of a pulse is calculated by: where:…”

Section: ) Spectral Efficiencymentioning

confidence: 99%

“…This coefficient measures energy outside the channel at -10 dB relative to total energy. This coefficient has been used in the analysis of interference from adjacent channels [33,34]. The non-band emission coefficient is defined as: ( )…”

Section: ) Off-band Broadcastsmentioning

confidence: 99%

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Genetic Algorithm-Based Three-Pole Pulse Design for IEEE802.15.4a Standard

Dhieb,

Ketata,

Loussert

et al. 2024

Preprint

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This article presents a novel triangular-shaped pulse design for Ultra-Wide-Band (UWB) radio pulses, specifically in compliance with the IEEE 802.15.4a standard and the Spectral Masks of the Federal Communications Commission (FCC). Utilizing a Genetic Algorithm (GA), our objective is to develop a triple pulse form that satisfies the requirements set by these standards. Theoretical analysis and simulations showcase enhanced performance in comparison to existing UWB pulses, achieving a power loss mask of 3%, off-band emission of 5% within an 8% emission band, and a remarkable spectral efficiency exceeding 75%.

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Section: ) Power Loss Maskmentioning

confidence: 99%

Section: ) Spectral Efficiencymentioning

confidence: 99%

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Genetic Algorithm-Based Three-Pole Pulse Design for IEEE802.15.4a Standard

Dhieb,

Ketata,

Loussert

et al. 2024

Preprint

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“…These features make it provide a novel physical basis for constructing artificial auditory systems ( Gao et al, 2022 ; Zhong et al, 2022 ). Although memristor-based Sallen-Key circuit with tunable gain-bandwidth and center frequency characteristics have been proposed for emulating the cochlea, it still lack experimental demonstration based on memristors’ multi-levels ( Li et al, 2020 ; Barraj et al, 2021 ; Onyejegbu et al, 2022 ). In addition, Wu et al (2021) used the stochastic gradient descent-supervised learning rule to train the preprocessed audio features.…”

Section: Introductionmentioning

confidence: 99%

A bioinspired configurable cochlea based on memristors

et al. 2022

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Cochleas are the basis for biology to process and recognize speech information, emulating which with electronic devices helps us construct high-efficient intelligent voice systems. Memristor provides novel physics for performing neuromorphic engineering beyond complementary metal-oxide-semiconductor technology. This work presents an artificial cochlea based on the shallen-key filter model configured with memristors, in which one filter emulates one channel. We first fabricate a memristor with the TiN/HfOx/TaOx/TiN structure to implement such a cochlea and demonstrate the non-volatile multilevel states through electrical operations. Then, we build the shallen-key filter circuit and experimentally demonstrate the frequency-selection function of cochlea’s five channels, whose central frequency is determined by the memristor’s resistance. To further demonstrate the feasibility of the cochlea for system applications, we use it to extract the speech signal features and then combine it with a convolutional neural network to recognize the Free Spoken Digit Dataset. The recognition accuracy reaches 92% with 64 channels, compatible with the traditional 64 Fourier transform transformation points of mel-frequency cepstral coefficients method with 95% recognition accuracy. This work provides a novel strategy for building cochleas, which has a great potential to conduct configurable, high-parallel, and high-efficient auditory systems for neuromorphic robots.

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confidence: 99%

Introductory Chapter: Novel Developments in UWB Technology

Vargas-Bernal¹

2023

UWB Technology - New Insights and Developments

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Like any technology that evolves, UWB systems must reduce their complexity, power consumption, sustainability, and the possibility of reconfiguration, to achieve the highest performance compared to other competitors for implementations of high-accuracy localization systems [1][2][3][4][5][6][7][8]. Despite the advances achieved so far, UWB systems face challenges such as mitigating errors from non-line-of-sight paths and jamming signal interference in dense environments, especially in extreme conditions [1]. In addition, in the pursuit of an upgrade, UWB systems must integrate machine learning capabilities as well as sensor data fusion. The main disadvantages of UWB technology are its high cost and increased power consumption. Until now, it has been established that UWB technology presents interference with the radio frequency systems found in its surroundings and vice versa. The data capacity of UWB systems is restricted because short-duration pulse coding implies longer information synchronization times. The purpose of this chapter is to present the different alternatives that UWB technology is investigating to improve its properties using integrated circuit design as well as materials science and engineering to establish itself as an emerging strategy for its application in high-accuracy radio frequency location systems.The remainder of the chapter is divided as follows: Section 2 introduces the basic concepts associated with UWB technology. Novel approaches for the use of UWB technology are summarized in Section 3. Some new developments in UWB systems are discussed in Section 4. Finally, the conclusions of the chapter are provided. ThanksThe author wants to thank his wife and son for their support and time to edit this book. The author appreciates the support of Ana Cink working for IntechOpen as an author service manager.

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Design of 3–5 GHz tunable memristor-based OOK-UWB transmitter

Cited by 9 publications

References 26 publications

Genetic Algorithm-Based Three-Pole Pulse Design for IEEE802.15.4a Standard

Genetic Algorithm-Based Three-Pole Pulse Design for IEEE802.15.4a Standard

A bioinspired configurable cochlea based on memristors

Introductory Chapter: Novel Developments in UWB Technology

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