Community radio

Radio over Fiber (RoF) stands as a cuttingedge technology poised to revolutionize emerging wireless networks, especially in the context of fifth-generation Cloud-Radio Access Networks (C-RAN). Concurrently, with the pervasive integration of deep learning across diverse domains such as communication and data processing, this investigation delves into the nonlinear effects observed in a fronthaul interface.

6p vithomson 02-07-2024 0 0   Download

Part 2 book "Low visibility antennas for communication systems" includes content: Applications of low visibility printed antennas, wearable antennas for communication and medical applications, wearable tunable printed antennas for medical applications, new wideband wearable meta material antennas for communication applications, fractal printed antennas, microwave and MM wave technologies, radio frequency measurements.

168p dianmotminh03 17-06-2024 0 0   Download

This paper researches, designs and integrates radio transceivers and mobile GSM into the internal communication system. The radio connection block can transmit and receive information via a radio transceiver. The mobile GSM connection block can transmit and receive information via mobile GSM devices.

4p viambani 18-06-2024 1 1   Download

If you already received your license, congratulations! This book helps you change from a listener to a doer. Any new hobby, particularly a technical one, can be intimidating to newcomers. By keeping Ham Radio For Dummies handy in your radio shack, getting your radio on the air and making contacts is easy. I cover the basics of getting a station put together properly and the fundamentals of on-the-air behavior. Use this book as your personal radio buddy and soon you’ll sound like a pro!

386p zizaybay1104 29-05-2024 3 2   Download

Part 1 book "Wireless communications - Principles and practice" includes content: Introduction to wireless communication systems, the cellular concept sytem design fundamentals, mobile adio propagation large scale path loss, mobile radio propagation small-scale fading and multipath, modulation tecniques for mobile radio.

298p dianmotminh01 14-05-2024 1 0   Download

Ebook Wireless technician’s handbook (Second edition) includes content: Chapter 1 reviewing the basics; chapter 2 cellular radio concepts; chapter 3 advanced mobile phone service; chapter 4 NA-TDMA; chapter 5 GSM; chapter 6 GPRS and EDGE; chapter 7 CDMA IS-95 and J-Std-008; chapter 8 CDMA2000; chapter 9 WCDMA; chapter 10 the basics of field test; chapter 11 testing AMPS; chapter 12 testing TDMA systems—GSM, NA-TDMA, GPRS, and EDGE; chapter 13 testing CDMA; chapter 14 WCDMA and beyond: testing overview.

312p longtimenosee03 22-02-2024 7 2   Download

Part 1 book "Modern communication circuits" includes content: Introduction to radio communication systems, small signal amplifiers, network noise and intermodulation distortion, frequency selective networks and transformers, high frequency amplifiers and automatic gain control, hybrid and transmission line transformers.

249p muasambanhan06 01-02-2024 6 2   Download

Part 1 book "Principles of electronic communication systems" includes content: Introduction to electronic communication; electronic fundamentals for communications; amplitude modulation fundamentals; amplitude modulator and demodulator circuits; fundamentals of frequency modulation; FM circuits; digital communication techniques; radio transmitters; communication receivers; multiplexing and demultiplexing; digital data transmission.

448p muasambanhan06 03-02-2024 3 1   Download

Part 1 book "Principles of electronic communication systems" includes content: Introduction to electronic communication; electronic fundamentals for communications; amplitude modulation fundamentals; amplitude modulator and demodulator circuits; fundamentals of frequency modulation; FM circuits; digital communication techniques; radio transmitters; communication receivers; multiplexing and demultiplexing.

388p muasambanhan06 03-02-2024 4 1   Download

Remote Radio Unit RRU 4G LTE Heatsink systems works based on the natural convection cooling, usually working outdoors in the harsh conditions of temperature, humidity, hoarfrost. In this study, the paper uses a real model of 4G RRU device with the capacity of 2x40W and 2x60W. Model is made of parallel heat sinks and is naturally cooled.

5p vijeff 01-12-2023 6 3   Download

This paper presents a proposed CP system for pipelines, utilizing an intelligent IoT system. The sensor nodes of the system designed based on the STM32 microcontroller perform the measurement of voltages from the reference electrodes, process the signal as well as perform wireless communication about the control stations via LoRa (Long Range Radio) communication.

9p vijeff 30-11-2023 5 3   Download

Part 1 of ebook "Introduction to Mobile network engineering: GSM, 3G-WCDMA, LTE and the road to 5G" provides readers with contents including: introduction; types of mobile network by multiple-access scheme; cellular system; radio propagation; mobile radio channel; radio network planning; global system mobile, GSM, 2G; EGPRS, GPRS/EDGE; third generation network (3G), UMTS;...

193p dangsovu 20-10-2023 6 5   Download

Continued part 1, part 2 of ebook "The event manager's bible: How to plan and deliver an event" provides readers with contents including: car parking; radio communications; first aid; emergency and normal procedures; formal presentation; event manager's manual; video diary/evidence; site maintenance; strip down/clear up; final debrief; final report;...

169p dangsovu 20-10-2023 9 7   Download

Continued part 1, part 2 of ebook "Electronic systems maintenance handbook" provides readers with contents including: facility grounding; network switching concepts; network communication; data acquisition; computer-based circuit simulation; audio frequency distortion mechanisms and analysis; video display distortion mechanisms and analysis; radio frequency distortion mechanisms and analysis; digital test equipment and measurement systems;....

316p dangsovu 20-10-2023 6 4   Download

Ebook "Electronics demystified" includes content: Direct current, alternating current, impedance and admittance, power supplies, emiconductor diodes, transistors and integrated circuits, signal amplifiers, signal oscillators, radio frequency transmitters, radio frequency receivers, telecommunications, communications antennas,... and other contents.

417p haojiubujain07 20-09-2023 6 3   Download

Ebook "Introduction to communication electronic warfare systems" includes content: Communication electronic warfare systems, electromagnetic signal propagation, noise and interference, radio communication technologies, system engineering, electronic support, electronic attack, antennas, receivers, signal processing, direction finding position fixing techniques, hyperbolic position fixing techniques, exciters and power amplifiers,... and other contents.

285p haojiubujain07 20-09-2023 10 3   Download

Continued part 1, part 2 of ebook "Antenna engineering handbook" provides readers with contents including: applications; low-frequency antennas; medium-frequency broadcast antennas; high-frequency antennas; VHF and UHF communication antennas; microwave-relay antennas; radiometer antennas; microwave beacon antennas; topics associated with antennas; radio-telescope antennas;...

683p tieulangtran 28-09-2023 6 3   Download

The article conducted surveys, analyses and assessments the status of propaganda activities to respond to climate change in Hanoi city current period. The research results show that the scope of propaganda activities is quite wide and spread over 10 counties and 18 districts belonging to Hanoi city; The content of propaganda is diverse, with knowledge and information related to climate change; Communication channels are abundant and organized in the form of workshops, radio, television, leaflets, parades,...

6p viindra 06-09-2023 3 2   Download

The paper provides a pathloss and channel model in a smart surface-assisted communication system built based on physical-optical techniques and Snell’s light reflection theorem. With mathematical expressions, it will provide researchers with a way to calculate, simulate, analyze, evaluate and calibrate communication channels to achieve optimal efficiency before deploying experimental fabrication. or for comparison with other information transfer enhancement technologies such as AF relay and amplifier, MIMO beamforming, and BackCom backscatter communication.

8p nhanchienthien 25-07-2023 4 4   Download

This paper presents different reconfigurable antennas with various techniques to obtain antenna reconfiguration. The reconfigurable antenna can be achieved using electrical components (PIN diodes, RFMEMSs, varactors, FETs), optical diodes, smart materials (liquid crystal or ferrites), or physical alteration of antenna structures.

7p viwhitewolf 11-07-2023 6 2   Download