Title :
On joint spectrum sensing and data transmission in relay assisted cognitive radio networks
Author :
Chatterjee, Saptarshi ; Acharya, Tamaghna ; Maity, Santi P.
Author_Institution :
Dept. of Inf. Technol., Bengal Eng. & Sci. Univ., Shibpur, India
Abstract :
This paper proposes a joint spectral sensing and secondary data transmission scheme in decode and forward relay assisted cognitive radio networks (CRNs). Sensing information of cognitive source (CS) and cognitive relay (CR) are cooperatively combined at CS to determine the possible presence of primary user (PU). An optimization framework is developed to determine the sensing time, data transmission time for CS and CR along with their associated transmission power to maximize the average throughput of secondary transmission. The constraints are peak transmission power of CS and CR and average interference to PU. Simulation results are provided to validate our analysis.
Keywords :
cognitive radio; decode and forward communication; optimisation; radio spectrum management; relay networks (telecommunication); signal detection; CRN; cognitive relay; cognitive source; decode and forward network; optimization framework; primary user; relay assisted cognitive radio networks; secondary data transmission scheme; spectrum sensing; Cognitive radio; Data communication; Interference; Optimization; Relays; Sensors; Throughput; Decode and forward relay; energy efficiency; power allocation; spectral sensing; throughput maximization;
Conference_Titel :
Communication Systems, Networks & Digital Signal Processing (CSNDSP), 2014 9th International Symposium on
Conference_Location :
Manchester
DOI :
10.1109/CSNDSP.2014.6923889
