Performance Analysis of Grouped Multilevel Space-Time Trellis Coding Technique Using Cognitive Radio in Different Deployment Models

Algorithm 1

Application of different space-time trellis coding in cognitive radio scenario.

	Step 1: input parameters
	Step 2: initialization of the probability matrices
	For
	Step 3: calculate missed detection probability
	Step 4: calculate total error probability
	Step 5: initialization
	Initialize the matrix for storing the values of:
	//Application of space-time coding process//
	Step 6: apply the space-time trellis coding
	Follow the process in Algorithm 2
	Step 7: apply the multilevel space-time trellis coding
	Follow the process in Algorithm 3
	Step 8: apply the group multilevel space-time trellis coding
	Follow the process in Algorithm 4
	//Application of space-time coded signal on the cognitive radio scenario//
	For i = 1 : 1 : rel
	Step 9: initialize SNR and convert to linear phase
	//dB to linear phase conversion//
	Step 10: generation of the signal and adding of noise variance
	Generate the signal (s)
	Add Rayleigh Fading
	Add noise variance ()
	Step 11: signal energy calculation
	Step 12: calculation of SNR
	Eb/No calculation
	;
	Signal when PU is present
	(H1, H1)
	Signal when PU absent
	; (H0, H0)
	Add time-delay bandwidth product
	;
	Step 13: calculation of energy when PU absent
	//H0 hypothesis//
	Step 14: calculation of energy when primary is present
	//H1 hypothesis//
	Step 15: calculate the global probability of detection (calculate Pdc and Pfc using E1 and E0)
	If
	//probability of detection//
	Else
	End
	Step 16: calculate the global probability of false alarm
	If
	; //probability of false alarm//
	Else
	End
	End
	Calculate Pd and Pf using Pdc and Pfc
	Step 17: detection and false alarm signal evaluation/optimization
	For l = n: 1: K
	Step 18: calculate the global probability of detection
	Step 19: calculate the global probability of false alarm
	End
	Step 20: calculate missed detection probability
	Step 21: calculate total error probability
	End
	Calculate BER
	End
	End