Study Analysis of H.D.A.F Relaying Protocols in Cognitive Networks

2-Hops based Hybrid Decode Amplify and Forward Relaying Protocols employing 2 x 2 OSTBC Alamouti scheme in MIMOs Systems
 Paperback
Sofort lieferbar | Lieferzeit:3-5 Tage I

54,90 €*

Alle Preise inkl. MwSt. | zzgl. Versand
ISBN-13:
9783659430947
Einband:
Paperback
Erscheinungsdatum:
24.05.2018
Seiten:
96
Autor:
Awais Salman Qazi
Gewicht:
159 g
Format:
220x150x6 mm
Sprache:
Englisch
Beschreibung:
The concept of cooperative communication in cognitive radio CR networks is used to economize the over utilization of spectrum in accommodating a rising demand of higher data rates for wireless services. The CR typically consists of the Primary User (PU), the Cognitive Relays (CRs), the Cognitive Controller (CC) and the Secondary User (SU). The PU sends its spectrum information to the CRs and CRs decode and re-encode the transmitted data by using Maximum Likelihood estimation and 2 x 2 Alamouti OSTBC techniques and later amplify the OSTBC (re-encoded) data at the relays. All the relays in the system forward their collective decision to CC to finalize its decision on the basis of the information provided by the relays. The CC uses the method known as the spectrum energy detection to compare the energy of PU spectrum with a predefined threshold. If it finds the energy of PU's spectrum exceeding the threshold, it means that PU's spectrum can be spared for SU otherwise PU is busy in its spectrum. This book is written by a Computer Scientist, a Computer Engineer and an Electrical Engineer and thus requires no prerequisite knowledge of the students but an interest in Radio communication.

Kunden Rezensionen

Zu diesem Artikel ist noch keine Rezension vorhanden.
Helfen sie anderen Besuchern und verfassen Sie selbst eine Rezension.