1. Introduction to SEAMCAT
European Communications Office Marc Le Devendec, CEPT Workshop on future UHF spectrum use for SRD, RFID and Smart Metering, 4-5 April 2011
EUROPEAN
COMMUNICATIONS
OFFICE
Nansensgade 19
DK-1366 Copenhagen
Denmark
Telephone:
Telefax:
Web Site:
Jukka Rakkolainen/ERO

2. SEAMCAT Principles ”SRD” features Practical information
Propagation model
Duty Cycle
Sensing
Practical information

3. SEAMCAT
Spectrum Engineering Advanced Monte Carlo Analysis Tool (
The radio spectrum can only be used optimally if radio compatibility is ensured between different radio systems located in the same or adjacent frequency ranges
Traditional analytical methods (MCL) cannot offer any satisfactory solution
Statistical approach based on the Monte Carlo method (see ERC Report 68/ITU-R Report SM )
Developed in CEPT as a co-operation project between NRAs, industry and ERO/ECO (first release in January 2000)

4. SEAMCAT Quantification of interference levels
Consideration of spatial and temporal distributions of the received signals 
Wanted
Signal
Inactive
Interferer
Victim
Active
t=t0
t=t1
t=ti
SEAMCAT can address any interference scenario regardless of the type of victim and interfering radio systems.

5. Propagation model
Extended Hata (SRD) - SE24 developed propagation model

6. Activity / Probability of transmission
Duty Cycle
Activity
Time

7. Impact on the results If the probability of transmitting is decreased:
the simulation radius is increased
probability of interference decreased

8. Sensing feature
Principle: interfering devices (It) try to detect the presence of protected services (e.g. the Wt) transmitting in each of the potentially available channels

9. Sensing feature Scan range of frequencies
Frequency is not available if the received power is above the threshold
Probability of failure
If frequency is available the feature determine the allowed e.i.r.p.
A single frequency: LBT

10. ECC Deliverables ERC Rec. 70-03: Short Range Devices (SRD)
ECC Report 158: SRR 26 GHz applications using UWB Technology on Radio Services
ECC Report 150: Compatibility studies between RDSS and other services in the band MHz
ECC Report 149: Compatibility of LP-AMI applications within MHz, in particular for the band MHz, with incumbent services
ECC Report 140: Compatibility between RLAN on board aircraft and radars in the bands / MHz
ECC Report 139: Impact of LPR, using Ultra-Wideband Technology on Radiocommunications Services
ECC Report 128: Compatibility of pseudolites in , and MHz
ECC Report 123: Impact of ODC applications using UWB technology on radio services
...

12. Modifications / New features
SEAMCAT Technical Group
STG Reflector:
Chair:
Thanks!
Jean-Philippe
Kermoal