Recently Updated Pages
1.8.1 SEAMCAT Technical Group (STG)
The SEAMCAT project is an ongoing WG SE (Working Group Spectrum Engineering) activity (Figure 16)...
1.7.4 Multi processing power in SEAMCAT
As of version 5, SEAMCAT is able to run in multiprocessor environments to increase the computatio...
1.7.3 Java source code
The source code for SEAMCAT is made available for scrutiny. The only condition for obtaining a c...
1.7.2 SEAMCAT home directory and configuration panel
When SEAMCAT (5 and upward) is run, a folder (SEAMCAT home directory) will be automatically creat...
1.7.1 Installation using .jar package
SEAMCAT is an open source project developed using Java which means it can run on any operating sy...
1.6 Understanding Radio Jargon
Many common terms in RF engineering are used differently depending on the specific community wher...
1.5 Applicability of SEAMCAT to spectrum engineering problems
SEAMCAT can address virtually all radio interference scenarios on terrestrial[1] paths in both co...
1.4.10 Interference calculation
SEAMCAT calculates the probability of interference for generic (i.e. non-cellular) victim systems...
1.4.9 Combined interference mechanism
The combination of the unwanted emissions and receiver blocking can also be studied simultaneousl...
1.4.8 Overloading
Overloading threshold is the minimum interfering signal levelat which the receiver loses its abil...
1.4.7 Intermodulation
The intermodulation interference, i.e. the power of intermodulation products, reduced by the inte...
1.4.6 Receiver blocking
The level of interference determined by the interferer’s transmit power, the antenna gains and pr...
1.4.5 Unwanted emissions
The level of unwanted emissions ( i.e. consisting of the out-of-band emissions and the spurious ...
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...
1.4.3 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...
1.4.2 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...
1.4.1 Introduction
In this section the interference calculations for ‘generic’ systems are described. Cellular syste...
1.3 Monte-Carlo Basics
The statistical methodology used as a basis for SEAMCAT is the Monte Carlo method. Statistical s...
1.2.12 Co channel
A co-channel interference scenario can be illustrated as shown in figure below. In this case a pa...
1.2.11 In-band, out-of-band, spurious, unwanted emission
In-band emission is understood as relating to the necessary bandwidth. The ITU-R Radio Regulation...