Demand Response Management Research Based on Cognitive Radio for Smart Grid

Table 1

List of major symbols.

Symbol	Description
	Number of power consumers
	Power demand of power consumers
	Total power demand of all consumers
	Power price
	Power supply of the supplier
	Cost function of the power supplier
	Gain function of power consumers
	Profit of the power supplier
	Benefits of power consumers
	Social benefits
	Number of iterations
	Original channel
	Cognitive channel
	State that is busy
	State that is idle
	Probability of
	Probability of
	Variance of AWGN noise
	Variance of PU’s signal
	Intensity of the DC noise
	Spectrum sensing time
	Preset decision threshold
	Detection probability
	False alarm probability
	Communication outage probability of
	Communication outage probability of
	Average DRM communication outage probability
	Channel switching probability
	Interference probability to PU
	Spectrum loss rate
	System utility