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Joint impact of sensing time and SPRF parameter on the performance of a continuous energy harvesting cooperative cognitive radio network
Author(s) -
Das Gopal Chandra,
Bhowmick Abhijit,
Dhar Roy Sanjay,
Kundu Sumit
Publication year - 2016
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.3239
Subject(s) - cognitive radio , computer science , energy (signal processing) , energy harvesting , throughput , detector , radio frequency , joint (building) , constraint (computer aided design) , power (physics) , telecommunications , real time computing , wireless , statistics , physics , mathematics , architectural engineering , geometry , quantum mechanics , engineering
Summary Joint impact of sensing time and signal power raise factor is studied for an improved energy detector–based energy harvesting cooperative cognitive radio network. All the cognitive radio nodes harvest energy either from radio frequency resources or from non–radio frequency resources. The probability density function of harvested energy from both the sources is exponentially distributed. Novel theoretical expressions for harvested energy and throughput are derived. Impact of several sensing parameters and a device constraint on the outage is studied. Optimal values of sensing time and signal power raise factor parameter pair are estimated for maximum harvested energy and maximum throughput. Energy efficiency of the network is also evaluated, and impact of sensing time on it is indicated.