Dynamic Interference Optimization in Cognitive Radio Networks for Rural and Suburban Areas

Table 1

Link budget parameters.

Parameter	Cognitive LTE-A	DTMB	DVB-T2	Unit
Transmitter EIRP	36	60.5–77.5	71–82.5	dBm
Maximum allowable interference signal level (from specified technology)	-97	-95	-95	dBm
Frequency	470–698; 470–790	470–698	470–790	MHz
Bandwidth	8 (); | 5	6	8	MHz
Total subcarriers	482 (); | 301	3780	32768	—
Used subcarriers	768 (); | 512	3744	27841	—
Frequency sampling factor	1.536	0.945	0.9712	—
Modulation scheme	Variable	64-QAM	64-QAM	—
Coding scheme	Variable	0.6	3/4	—
BS antenna height	20–50	80–262	64–302	m
Cell interference margin	2	0	0	dB
Receiver antenna height	1.5-3	3	3	m
Receiver antenna gain	11.5	8	11.5	dB
Receiver feeder losses	0.5	0.5	0.5	dB
Noise figure	7	7	6	dB
Receiver minimum sensitivity	-90.5	-84.5	-83.5	dBm
Shadow margin	8 | 7	12.3	12.3	dB
Fade margin	7.4	8	9	dB