1. Cognitive radio helps solve spectrum congestion by allowing secondary users to access unused licensed spectrum without interfering with primary users. It uses spectrum sensing techniques to identify unused portions of spectrum.
2. Common spectrum sensing techniques include energy detection and matched filtering. Energy detection analyzes signal energy to identify unused spectrum, while matched filtering more accurately detects signal types.
3. Spectrum sensing faces challenges including hidden primary users, security issues from spoofing, and ensuring reliability and scalability of data transmission to centralized authorities. Cooperative sensing helps address problems like hidden users through information sharing between radios.
Investigation of TV White Space for Maximum Spectrum Utilization in a Cellula...Onyebuchi nosiri
Abstract— The shortage of spectrum resource availability in wireless communication network due to the rapid increase in the number of subscribers and multimedia applications has given rise to the need for effective spectrum utilization of the licensed spectrum. Cognitive Radio Technology (CRT) was adopted for the system analysis due to its dynamism in accommodating both licensed and unlicensed users within a particular spectrum band. The study framework comprised television station channels in Owerri and its environs and Mobile Telecommunication Networks (MTN) in Owerri- the capital of Imo State, Nigeria as the license and unlicensed users respectively. An outdoor twenty-four hour spectrum occupancy measurement was carried out in the frequency bands of the licensed networks using 240-960 MHz Radio Frequency Spectrum analyzer to determine the spectral usage of the licensed user. A threshold of -95 dB was used to determine the presence of the licensed users. From the results obtained, it was observed that 60.7% of the spectrum band covered was unoccupied, 31.5% was not fully occupied while 7.9% was fully occupied. Energy Detection spectrum approach was implemented by the unlicensed users for easy determination of the spectrum status and resource management. The research therefore determines the status of Radio Frequency (RF) Spectrum receivable in Owerri and its environs and proffer measures deployable in harnessing the unused RF resources using CRT.
Investigation of TV White Space for Maximum Spectrum Utilization in a Cellula...Onyebuchi nosiri
Abstract— The shortage of spectrum resource availability in wireless communication network due to the rapid increase in the number of subscribers and multimedia applications has given rise to the need for effective spectrum utilization of the licensed spectrum. Cognitive Radio Technology (CRT) was adopted for the system analysis due to its dynamism in accommodating both licensed and unlicensed users within a particular spectrum band. The study framework comprised television station channels in Owerri and its environs and Mobile Telecommunication Networks (MTN) in Owerri- the capital of Imo State, Nigeria as the license and unlicensed users respectively. An outdoor twenty-four hour spectrum occupancy measurement was carried out in the frequency bands of the licensed networks using 240-960 MHz Radio Frequency Spectrum analyzer to determine the spectral usage of the licensed user. A threshold of -95 dB was used to determine the presence of the licensed users. From the results obtained, it was observed that 60.7% of the spectrum band covered was unoccupied, 31.5% was not fully occupied while 7.9% was fully occupied. Energy Detection spectrum approach was implemented by the unlicensed users for easy determination of the spectrum status and resource management. The research therefore determines the status of Radio Frequency (RF) Spectrum receivable in Owerri and its environs and proffer measures deployable in harnessing the unused RF resources using CRT.
A novel fast time jamming analysis transmission selection technique for radar...IJECEIAES
The jamming analysis transmission selection (JATS) sub-system is used in radar systems to detect and avoid the jammed frequencies in the available operating bandwidth during signal transmission and reception. The available time to measure the desired frequency spectrum and select the non-jammed frequency for transmission is very limited. A novel fast time (FAT) technique that measures the channel spectrum, detects the jamming sub-band and selects the non-jammed frequency for radar system transmission in real time is proposed. A JATS sub-system has been designed, simulated, fabricated and implemented based on FAT technique to verify the idea. The novel FAT technique utilizes time-domain analysis instead of the wellknown fast Fourier transform (FFT) used in conventional JATS sub-systems. Therefore, the proposed fast time jamming analysis transmission selection (FAT-JATS) sub-system outperforms other reported JATS sub-systems as it uses less FPGA resources, avoids time-delay occurred due to complex FFT calculations and enhances the real time operation. This makes the proposed technique an excellent candidate for JATS sub-systems.
Channel Management in IEEE 802.22 WRAN Systemspraseetha_kr
The first international standard in Cognitive Radio Networks is IEEE 808.22 Wireless Regional Area Networks, which uses unused TV spectrum to provide Broadband access to rural areas. This slides describes how Channel management is done in WRAN Systems.
Cognitive Radio: When might it Become Economically and Technically Feasible? Jeffrey Funk
My Master's students use ideas from my (Jeff Funk) forthcoming book (Technology Change and the Rise of New Industries) to analyze the economic and technical feasibility of cognitive radio. See my other slides for details on concepts, methodology, and other new industries.
https://www.enoinstitute.com/product/rf-training-fundamentals-workshop/ - RF Training Fundamentals; RF, also known as Radio Frequency is incorporated into almost everything that transmits or receives a radio wave which including amateur radio, Cell Phones: GSM, CDMA, UMTS, LTE, LTE-Advanced, Wi-Fi, Bluetooth, Zigbee, RFID, NFC, medical devices, GPS, Microwave, Satellite Communications, Radar, Public Safety and more. RF Training course gives you the expertise needed to plan, design, optimize and manage effective and reliable RF and wireless solutions. An in-depth knowledge of mathematics, physics and general electronics theory is covered.
RF Training - RESOURCES:
RF Training Study Guide by Klaus Finkenzeller - Hardcover/Amazon
RF Training Study Guide by U.S. Navy - Paperback/Amazon
RF Training Study Guide by Naval Education & Training Center - Paperback/Amazon
RF Training Study Guide by Klaus Finkenzeller – Paperback/Amazon
RF Training Prep Guide by Cotter Sayre – Paperback/Amazon
RF Training Study Guide by bWHITE SANDS MISSILE RANGE, NEVADA TEST SITE, et al - Loose Leaf/Amazon
RF Training Study Guide by Naval Education and Training Command - Amazon Paperback
RF Training Study Guide by United States Navy - Paperback/Kindle Amazon
RF Training Study Guide by U.S. Navy – Kindle/ Amazon
RF Training Study Guide by Edward Balkovich – Paperback / Amazon
RF Training Study Guide by U.S. Navy – Loose Leaf/ Amazon
Radio Frequency Training Study Guide by ARRL Inc. and Walter Banzhaf WB1ANE - Kindle/Paperback/ Amazon
Radio Frequency Training Study Guide by ZHOU ZHI PING ZHU SUN ZI WEN – Paperback/Amazon
Radio Frequency by U.S. Air Force Kindle /Paperback/ Amazon
Radio Frequency Training by Lamont V. Blake and Maurice W. Long – Paperback/ Kindle/Amazon
Radio Frequency Training Study Guide by Patrick J. Sweeney - Paperback/Amazon
CSSLP Certification Training by Mark Brown, Sam Patadia, et al. – Kindle/Paperback/Amazon
CSSLP Certification Training by Headquarters Department of the Army – Paperback/Amazon
RF TRAINING FUNDAMENTALS WORKSHOP – CUSTOMIZE It::
We can adapt this training course to your group’s background and work requirements at little to no added cost.
If you are familiar with some aspects of this RF Training Fundamentals course, we can omit or shorten their discussion.
We can adjust the emphasis placed on the various topics or build the training around the mix of technologies of interest to you (including technologies other than those included in this outline).
If your background is nontechnical, we can exclude the more technical topics, include the topics that may be of special interest to you (e.g., as a manager or policy-maker), and present the RF Training Fundamentals course in manner understandable to lay audiences.
Introduction Videos about LTE AP Pro
Overview on LTE and 4.5 G Evolution Around the World
LTE Advance Pro: Enhancements
LTE Advance Pro: New Use Cases
Case Study: Turkey’s Mobile Operators Evolution towards 4.5 G
Summary of LTE Advance Pro
MATLAB Simulation: 2D Beamforming algorithms (LMS, NLMS RLS and CM)
References
In this prentation cognitive radio is described, discussed
and compared with software defined radio (SDR). The two types
of cognitive radio are presented and examples on both spectrum
interweave and spectrum underlay cognitive radio antenna systems
are detailed. Reconfigurable filtennas are proposed as communicating
antennas in a MIMO setting for both cases of cognitive
radio. The benefits of resorting to filtennas as well as toMIMO
configuration is shown and discussed herein. The various antenna
examples are designed, tested and compared with each other. Conclusions
are drawn based on the presented results.
A novel fast time jamming analysis transmission selection technique for radar...IJECEIAES
The jamming analysis transmission selection (JATS) sub-system is used in radar systems to detect and avoid the jammed frequencies in the available operating bandwidth during signal transmission and reception. The available time to measure the desired frequency spectrum and select the non-jammed frequency for transmission is very limited. A novel fast time (FAT) technique that measures the channel spectrum, detects the jamming sub-band and selects the non-jammed frequency for radar system transmission in real time is proposed. A JATS sub-system has been designed, simulated, fabricated and implemented based on FAT technique to verify the idea. The novel FAT technique utilizes time-domain analysis instead of the wellknown fast Fourier transform (FFT) used in conventional JATS sub-systems. Therefore, the proposed fast time jamming analysis transmission selection (FAT-JATS) sub-system outperforms other reported JATS sub-systems as it uses less FPGA resources, avoids time-delay occurred due to complex FFT calculations and enhances the real time operation. This makes the proposed technique an excellent candidate for JATS sub-systems.
Channel Management in IEEE 802.22 WRAN Systemspraseetha_kr
The first international standard in Cognitive Radio Networks is IEEE 808.22 Wireless Regional Area Networks, which uses unused TV spectrum to provide Broadband access to rural areas. This slides describes how Channel management is done in WRAN Systems.
Cognitive Radio: When might it Become Economically and Technically Feasible? Jeffrey Funk
My Master's students use ideas from my (Jeff Funk) forthcoming book (Technology Change and the Rise of New Industries) to analyze the economic and technical feasibility of cognitive radio. See my other slides for details on concepts, methodology, and other new industries.
https://www.enoinstitute.com/product/rf-training-fundamentals-workshop/ - RF Training Fundamentals; RF, also known as Radio Frequency is incorporated into almost everything that transmits or receives a radio wave which including amateur radio, Cell Phones: GSM, CDMA, UMTS, LTE, LTE-Advanced, Wi-Fi, Bluetooth, Zigbee, RFID, NFC, medical devices, GPS, Microwave, Satellite Communications, Radar, Public Safety and more. RF Training course gives you the expertise needed to plan, design, optimize and manage effective and reliable RF and wireless solutions. An in-depth knowledge of mathematics, physics and general electronics theory is covered.
RF Training - RESOURCES:
RF Training Study Guide by Klaus Finkenzeller - Hardcover/Amazon
RF Training Study Guide by U.S. Navy - Paperback/Amazon
RF Training Study Guide by Naval Education & Training Center - Paperback/Amazon
RF Training Study Guide by Klaus Finkenzeller – Paperback/Amazon
RF Training Prep Guide by Cotter Sayre – Paperback/Amazon
RF Training Study Guide by bWHITE SANDS MISSILE RANGE, NEVADA TEST SITE, et al - Loose Leaf/Amazon
RF Training Study Guide by Naval Education and Training Command - Amazon Paperback
RF Training Study Guide by United States Navy - Paperback/Kindle Amazon
RF Training Study Guide by U.S. Navy – Kindle/ Amazon
RF Training Study Guide by Edward Balkovich – Paperback / Amazon
RF Training Study Guide by U.S. Navy – Loose Leaf/ Amazon
Radio Frequency Training Study Guide by ARRL Inc. and Walter Banzhaf WB1ANE - Kindle/Paperback/ Amazon
Radio Frequency Training Study Guide by ZHOU ZHI PING ZHU SUN ZI WEN – Paperback/Amazon
Radio Frequency by U.S. Air Force Kindle /Paperback/ Amazon
Radio Frequency Training by Lamont V. Blake and Maurice W. Long – Paperback/ Kindle/Amazon
Radio Frequency Training Study Guide by Patrick J. Sweeney - Paperback/Amazon
CSSLP Certification Training by Mark Brown, Sam Patadia, et al. – Kindle/Paperback/Amazon
CSSLP Certification Training by Headquarters Department of the Army – Paperback/Amazon
RF TRAINING FUNDAMENTALS WORKSHOP – CUSTOMIZE It::
We can adapt this training course to your group’s background and work requirements at little to no added cost.
If you are familiar with some aspects of this RF Training Fundamentals course, we can omit or shorten their discussion.
We can adjust the emphasis placed on the various topics or build the training around the mix of technologies of interest to you (including technologies other than those included in this outline).
If your background is nontechnical, we can exclude the more technical topics, include the topics that may be of special interest to you (e.g., as a manager or policy-maker), and present the RF Training Fundamentals course in manner understandable to lay audiences.
Introduction Videos about LTE AP Pro
Overview on LTE and 4.5 G Evolution Around the World
LTE Advance Pro: Enhancements
LTE Advance Pro: New Use Cases
Case Study: Turkey’s Mobile Operators Evolution towards 4.5 G
Summary of LTE Advance Pro
MATLAB Simulation: 2D Beamforming algorithms (LMS, NLMS RLS and CM)
References
In this prentation cognitive radio is described, discussed
and compared with software defined radio (SDR). The two types
of cognitive radio are presented and examples on both spectrum
interweave and spectrum underlay cognitive radio antenna systems
are detailed. Reconfigurable filtennas are proposed as communicating
antennas in a MIMO setting for both cases of cognitive
radio. The benefits of resorting to filtennas as well as toMIMO
configuration is shown and discussed herein. The various antenna
examples are designed, tested and compared with each other. Conclusions
are drawn based on the presented results.
Investigation of TV White Space for Maximum Spectrum Utilization in a Cellula...Onyebuchi nosiri
Abstract— The shortage of spectrum resource availability in wireless communication network due to the rapid increase in the number of subscribers and multimedia applications has given rise to the need for effective spectrum utilization of the licensed spectrum. Cognitive Radio Technology (CRT) was adopted for the system analysis due to its dynamism in accommodating both licensed and unlicensed users within a particular spectrum band. The study framework comprised television station channels in Owerri and its environs and Mobile Telecommunication Networks (MTN) in Owerri- the capital of Imo State, Nigeria as the license and unlicensed users respectively. An outdoor twenty-four hour spectrum occupancy measurement was carried out in the frequency bands of the licensed networks using 240-960 MHz Radio Frequency Spectrum analyzer to determine the spectral usage of the licensed user. A threshold of -95 dB was used to determine the presence of the licensed users. From the results obtained, it was observed that 60.7% of the spectrum band covered was unoccupied, 31.5% was not fully occupied while 7.9% was fully occupied. Energy Detection spectrum approach was implemented by the unlicensed users for easy determination of the spectrum status and resource management. The research therefore determines the status of Radio Frequency (RF) Spectrum receivable in Owerri and its environs and proffer measures deployable in harnessing the unused RF resources using CRT.
Investigation of TV White Space for Maximum Spectrum Utilization in a Cellula...Onyebuchi nosiri
Abstract— The shortage of spectrum resource availability in wireless communication network due to the rapid increase in the number of subscribers and multimedia applications has given rise to the need for effective spectrum utilization of the licensed spectrum. Cognitive Radio Technology (CRT) was adopted for the system analysis due to its dynamism in accommodating both licensed and unlicensed users within a particular spectrum band. The study framework comprised television station channels in Owerri and its environs and Mobile Telecommunication Networks (MTN) in Owerri- the capital of Imo State, Nigeria as the license and unlicensed users respectively. An outdoor twenty-four hour spectrum occupancy measurement was carried out in the frequency bands of the licensed networks using 240-960 MHz Radio Frequency Spectrum analyzer to determine the spectral usage of the licensed user. A threshold of -95 dB was used to determine the presence of the licensed users. From the results obtained, it was observed that 60.7% of the spectrum band covered was unoccupied, 31.5% was not fully occupied while 7.9% was fully occupied. Energy Detection spectrum approach was implemented by the unlicensed users for easy determination of the spectrum status and resource management. The research therefore determines the status of Radio Frequency (RF) Spectrum receivable in Owerri and its environs and proffer measures deployable in harnessing the unused RF resources using CRT.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.