Study and Develpment of Power Control Schemes within a Cognitive Radio-Based Game Theoretic Framework
Author
Roig, Victor Alvarez
Term
10. term
Publication year
2010
Pages
62
Abstract
Fjerde generations (4G) mobilstandarder fra International Telecommunication Union (ITU) sætter ambitiøse datahastighedsmål: omkring 100 Mbps for brugere med høj mobilitet og op til 1 Gbps for brugere med lav mobilitet. For at nå disse mål kræves ofte mange små basestationer—picoceller og femtoceller—som øger kapaciteten, men også skaber mere interferens. Denne afhandling undersøger, hvordan sendeeffekt kan styres, så en eksisterende metode kaldet GRACE, der bygger på Cognitive Radio (radioer, der sanser og tilpasser sig omgivelserne) og spilteori (matematiske modeller for strategisk interaktion), kan holde en god balance mellem kapacitet og udfald (tab af forbindelse), samtidig med hurtig konvergens, lav kompleksitet og nem skalerbarhed. Vi gennemgår Cognitive Radio, spilteori og effektsstyringsteknikker og foreslår en ny algoritme til effektsstyring. Simulationer viser, at Fractional Power Control kan markant forbedre ydeevnen med hensyn til udfald og reducere energiforbruget i mobile enheder.
Fourth-generation (4G) mobile standards from the International Telecommunication Union (ITU) set ambitious data-rate targets: about 100 Mbps for high-mobility users and up to 1 Gbps for low-mobility users. Meeting these targets often requires deploying many small base stations—picocells and femtocells—which increase capacity but also create more interference. This thesis examines how to manage transmit power so that an existing method called GRACE, which uses ideas from Cognitive Radio (radios that sense and adapt to their environment) and Game Theory (mathematical models of strategic interaction), can maintain a good balance between capacity and outage (loss of service), while remaining fast to converge, simple, and scalable. We review Cognitive Radio, Game Theory, and power control techniques, and propose a new power control algorithm. Simulations indicate that Fractional Power Control can notably improve outage performance and reduce energy use in mobile devices.
[This abstract was generated with the help of AI]
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