Wireless Communications and Mobile Computing / 2020 / Article / Tab 1

Research Article

Censoring-Based Relay Transmission for Achieving Energy Efficiency in Cognitive Radio Networks

Table 1

System parameters.

SymbolDescription

Channel coefficient between the link
Time slot duration
Sensing phase duration of MAC frame
Received signal-to-noise ratio at
Sensing time allocation factor
Number of available secondary relays
Secondary source, relay circuit power consumptions, and total transmission power
False alarm probability and detection probability of each SU
Transmitting power allocation on and
Transition matrix of PU’s state
Global detection probability and false alarm probability of CSS
Sensing, decision reporting consumption power for each SU
Average energy of CSS
Secondary transmitting average throughput
Secondary transmitting average energy consumption
Mean energy efficiency
Stationary probabilities for primary band to be busy and idle
Secondary outage probability
Minimum global detection probability of secondary transmission
Maximum outage probability of secondary transmission
Average busy and idle periods
Noise power
Transmission data rate of the link

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