Cognitive Radio Spectrum Sensing-Based QAM Technique Using Blockchain

Table 1

List of abbreviation.

Acronyms	Description
Abs	Absolute function
AWGN	Additive white Gaussian noise
BPSK	Binary phase shift keying
cdf	Cumulative distribution “gamainv” function
CR	Cognitive radio
CU	Cognitive users
CSS	Cooperative spectrum sensing
ED	Energy detection
FC	Fusion centre
OFDM	Orthogonal frequency division multiplexing
	Probability of detection
PDF	Probability density function
	Probability of false alarm
	Probability of miss detection
PU	Primary users
QAM	Quadrature amplitude modulation
QoS	Quality of service
ROC	Receiver operating characteristics
SDR	Software-defined radio
SNR	Signal to noise radio
SS	Spectrum sensing
Std	Standard deviation
SU	Secondary users