Efficient Resource Allocation In Cognitive Radio Networks

Energy Efficient Architectures and Key Techniques to Enable Energy Efficient Wireless Network in green radio project Abstract: Technical innovations changed every day life as fast and profoundly as the massive use of personal mobile communications. With rapid increase of modern communications networks, problems like emission of CO2 and energy consumption has emerged which have a potential adverse impact upon the environment and their operating energy costs are also increasing. Since 2006, data traffic

OPTIMAL COMMUNICATION OF REAL TIME DATA ON SECURE CDMA IP RAN NETWORK Abstract: This paper presents an optimal and secure communication of real time data over a CDMA based IP RAN network. In the process of data transmission, a new coding approach for security enhancement and quality improvement based on spectrum utilization and antenna coding is suggested. The traffic model is developed for image and audio data transmission over a wireless channel, having an interference of AWGN noise with fading

continuously upgrading their radio technologies to meet the demand. LTE advanced is the successor version of LTE (Long Term Evolution), which fulfills the entire criterion specified by the International Telecommunications Union (ITU) to be considered as 4G. In order to satisfy all the standards specified by the ITU there were many advanced technologies and capabilities that the older telecommunication systems did not include. There has been a rapid evolution in the radio access technologies over the

spectrum allocation has led to the under exploitation of the available frequency band. This problem can be mitigated by cognitive radio technology. It is a concept which with its learning ability is aware about its environment and intelligently adapts to it with objectives like reliable communication, efficient utilization of spectrum and minimal or no interference among users. Various techniques have been suggested in the research works to access the spectrum dynamically in a cognitive radio environment

Amplify and forward cooperative communication scheme is modeled using Stackelberg market framework, where a relay is willing to sell its resources; power and bandwidth to multi-user in the system in order to maximize its revenue. The relay determines the prices for relaying users’ information depending on its available resources and the users’ demands. Subsequently, each user maximizes its own utility function by determining the optimum power and the optimum bandwidth to buy from the relay. The

SOFTWARE DEFINED COGNITIVE RADIO USING MATLAB SOFTWARE DEFINED COGNITIVE RADIO USING MATLAB INDEX ABSTRACT…….………………………………………………………………....................................5 Chapter 1 -SOFTWARE-DEFINED RADIO 1.1 Introduction to Software-Defined Radio………………………………………………6 1.2 A brief history of SDR ………………………………………………………………………….7 1.3 Role of SDR ………………………..……………………………………………………………….7 1.4.1 Problems faced by Wireless Communication Industry

INVITED PAPER Cognitive Radio and Networking Research at Virginia Tech A large research team with a wide range of expertiseVfrom ICs and reconfigurable computing to wireless networkingVworks to achieve the promise of cognitive radio. By Allen B. MacKenzie, Senior Member IEEE , Jeffrey H. Reed, Fellow IEEE , Peter Athanas, Senior Member IEEE , Charles W. Bostian, Fellow IEEE , R. Michael Buehrer, Senior Member IEEE , Luiz A. DaSilva, Senior Member IEEE , Steven W. Ellingson, Senior Member IEEE

clusters increases self-noise generated by these codes may cross threshold limit and reach capacity limit. This forces to look at multiple channel use for improved throughput and energy-efficiency. We present an energy-efficient multi-channel routing protocol (CFCA) for wireless sensor networks. By computing the size of each cluster and identifying non-overlapping clusters, the proposed method allows channel reuse within WSN. This algorithm optimizes number of channels required for the given WSN. Key words:

Abstract A Self-Organizing Network (SON) is a compilation of functions (or actions) for the automatic design of communication nodes for optimized performance. Moreover, Self-Organizing Networks are computerized and optimized versions of cellular networks. Capital expenditure, also called CAPEX, is the cost of doing business to create a future advantage. Operational expenditure (OPEX) is the money that a business spends to transform stock into throughput. The self - organization is considered to be

Networks Effects on Organization Homework 2 Raghava Katreepalli, Dawg: 853242522 Introduction: This Paper discuss about network effects on two different organizations. Firstly it will discuss about network effects on physical organization and then about virtual organization. Network effects or function of network size and network strength [1]. The theory related to network effects on organization can be categorized into three parts [1]: i. depends on technology adopted i.e., what factors would contribute