Results 11 to 20 of about 37,523,811 (205)

LOW FREQUENCY DIGITAL RECEIVER [PDF]

open access: yesРадиофизика и электроника, 2015
Application of digital devices removes many experimental obstacles, as the physical elements are replaced by their virtual computer analogs. A receiver is realized in an ordinary computer supplied by the ADC (analog-digital converter) board and by the ...
Y. P. Galyuk
doaj   +1 more source

Power Scalable Angle of Arrival Estimation Using Pilot Design With Orthogonal Subsequences

open access: yesIEEE Open Journal of the Communications Society, 2021
Energy efficient array processing is critical to implement feasible solutions for directional communication in a mmWave channel. MmWave channels are highly susceptible to blockage and require frequent angle of arrival (AoA) estimation.
Mahbuba S. Ullah   +2 more
doaj   +1 more source

Effects of Interference and Mitigation Using Notch Filter for the DVB-S2 Standard

open access: yesTelecom, 2020
The abundance of radio signals and their increasing number creates interferences on adjacent signals and sometimes, with co-channel communication. Jammers, which are operated by hackers or by military forces, are another source of smart and powerful ...
Mohammad Hossein Same   +4 more
doaj   +1 more source

Multiple Narrowband Interferences Characterization, Detection and Mitigation Using Simplified Welch Algorithm and Notch Filtering

open access: yesApplied Sciences, 2021
By increasing the demand for radio frequency (RF) and access of hackers and spoofers to low price hardware and software defined radios (SDR), radio frequency interference (RFI) became a more frequent and serious problem. In order to increase the security
Mohammad Hossein Same   +4 more
doaj   +1 more source

Leveraging Waveform Structure to Develop a Power Scalable AoA Estimation

open access: yesIEEE Open Journal of the Communications Society, 2021
In a mmWave mobile device, power consumption resulting from the high sampling rate is a primary concern for angle of arrival (AoA) estimation solutions. In this paper, we provide a power scalable solution for AoA estimation with structured waveforms in a
Mahbuba Sheba Ullah   +2 more
doaj   +1 more source

High Performance Broadcast Receiver Based on Obsolete Technology

open access: yesSensors, 2022
Since its inception, the electronics industry has mass-produced equipment. The fast evolution of electronic technologies made obsolete the entire generation of products and even technologies.
Laurenţiu Teodorescu, Gabriel Dima
doaj   +1 more source

CipherCAD Testbed [PDF]

open access: yesRadioengineering, 2021
The CipherCAD testbed is a unique workplace for the development, design, testing, verification and teaching of the communications systems. CipherCAD is at the core of the workplace, which is an application primarily designed for solving cryptographic ...
V. Platenka, A. Mazalek
doaj  

Research on L-band wideband RF digital receiver and demodulator

open access: yesDianzi Jishu Yingyong, 2021
L-band radio frequency is in the range of 1 GHz~2 GHz,which is widely used in rader, communication and navigation. The main research content of this paper is to design an L-band broadband, high dynamic RF digital receiver using RF digital receiver ...
Tang Bo, Li Lu
doaj   +1 more source

Optical wireless communications utilizing a dicode PPM PIN-BJT receiver [PDF]

open access: yes, 2005
Original results are presented for an optical wireless system employing dicode pulse position modulation (DiPPM) and a PIN-BJT receiver. When operating at and a bit rate of 10 Mb/s a sensitivity of –51 dBm (Pe=10-9) is achieved and this represents a ...
Cryan, R.A., Menon, M.
core   +1 more source

Single-Pass Bistatic SAR Interferometry Using Fixed-Receiver Configurations: Theory and Experimental Validation [PDF]

open access: yes, 2010
In this paper, bistatic interferometry using fixed-receiver configurations is addressed both theoretically and experimentally. The analytical expressions for interferometric phase and height sensitivity are derived, and a full interferometric processing ...
Mallorqui, Jordi J.   +5 more
core   +1 more source

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