1.4 Interference calculations in generic systems
1.4.1 Introduction
In this section the interference calculations for ‘generic’ systems are described. Cellular syste...
1.4.2 An illustration with C/I as interference criterion
The C/I ratio available at the victim receiver’s input is computed using both the iRSS (Interferi...
1.4.3 Methodology associated to the interference criterion (C/I, C/(I+N), (N+I)/N, I/N)
Four interference criteria are considered within SEAMCAT: C/I : Carrier to interference...
1.4.4 Interference criteria relationship
C/I may vary typically from 9 dB (e.g. for QPSK) to 26 dB or higher (e.g. for 64QAM…). By introdu...
1.4.5 Unwanted emissions
The level of unwanted emissions ( i.e. consisting of the out-of-band emissions and the spurious ...
1.4.6 Receiver blocking
The level of interference determined by the interferer’s transmit power, the antenna gains and pr...
1.4.7 Intermodulation
The intermodulation interference, i.e. the power of intermodulation products, reduced by the inte...
1.4.8 Overloading
Overloading threshold is the minimum interfering signal levelat which the receiver loses its abil...
1.4.9 Combined interference mechanism
The combination of the unwanted emissions and receiver blocking can also be studied simultaneousl...
1.4.10 Interference calculation
SEAMCAT calculates the probability of interference for generic (i.e. non-cellular) victim systems...