1. STEP 5: A REAL CASE European Communications Office Stella Lyubchenko October 2010 EUROPEAN COMMUNICATIONS OFFICE Nansensgade 19 DK-1366 Copenhagen Denmark Telephone: + 45 33 89 63 00 Telefax: + 45 33 89 63 30 E-mail: ero@ero.dk Web Site: http://www.ero.dk

2. SEAMCAT Workshop Stella Lyubchenko / ECO Page 205 October 2010 Illustration of coverage and simulation radius in SEAMCAT Victim Receiver (vr) (Origin of simulation) Interfering Transmitter (it) (Origin of interfering coverage) Wanted Transmiter (wt) (Origin of victim coverage) dRSS Victim Receiver iRSS Victim link Coverage radius Wanted Receiver (wr) Interfering link Coverage radius Simulation radius dRSS Wanted Receiver

3. SEAMCAT Workshop Stella Lyubchenko / ECO Page 305 October 2010 Distance between the It and the Vr (simulation radius) In this case Victim Link and Interfering Link operate at 1000 MHz, therefore simulation radius is define as follows:

4. SEAMCAT Workshop Stella Lyubchenko / ECO Page 405 October 2010 Distance between the It and the Vr (simulation radius) It The It is located between 1 km and 10 km; iRSS unwanted = Pe + Ge + Gr – L; It In this example if It located between 1 km and 10 km then iRSS unwanted will be in the range between -59.5 dBm and -39.5 dBm

5. SEAMCAT Workshop Stella Lyubchenko / ECO Page 505 October 2010 Wanted Transmitter (Wt) (coverage radius) - User-defined radius; - Noise-limited network; - Trafic-limited network

6. SEAMCAT Workshop Stella Lyubchenko / ECO Page 605 October 2010 Wanted Transmitter (Wt) (coverage radius) The dRSS for a receiver located at the edge of the coverage area is calculated in the following way: dRSS=Pe+Ge+Gr-L if when dRSS = -47.5 dBm

7. SEAMCAT Workshop Stella Lyubchenko / ECO Page 705 October 2010 Calculation of simulation radius (Uniform density mode) Within the simulation radius following number of active transmitters can be located uniformly: For a single It For 10 active It iRSS Unwanted = - 24.5 dBm iRSS Unwanted = - 34.5 dBm

8. SEAMCAT Workshop Stella Lyubchenko / ECO Page 805 October 2010 Calculation of simulation radius (”none” mode) In the “none” mode it is also possible to define Uniform density of transmitters by using the Uniform polar distance iRSS Unwanted = - 24.5 dBm For the single transmitter with R simulation = 0.178 km

9. SEAMCAT Workshop Stella Lyubchenko / ECO Page 905 October 2010 Protection distance Calculations of iRSS Unwanted will be done only if location of It satisfied to the following condition:

10. SEAMCAT Workshop Stella Lyubchenko / ECO Page 1005 October 2010 Power control Victim Link and Interfering operate at 1000 MHz. Distance between the Victim and Interfering transmitter is 1 km.

11. SEAMCAT Workshop Stella Lyubchenko / ECO Page 1105 October 2010 Power control if power control is not activated then: iRSS Unwanted= 33(dBm)+11+9-(32.5+10log(1)+20log(1000)) = -39.5dBm

12. SEAMCAT Workshop Stella Lyubchenko / ECO Page 1205 October 2010 Power control dRSS Wanted Receiver= 33(dBm)+11+11-(32.5+10log(1)+20log(1000)) = -37.5dBm 1

13. SEAMCAT Workshop Stella Lyubchenko / ECO Page 1305 October 2010 Power control 2 -50dBm (threshold) + 3 · Step (5dB) > –37.5dBm > -50dBm (threshold) + 2 · Step (5dB) The gain of Power control (g it PC ) = 10 dB then iRSS unwanted = -39.5dBm – g it PC = -49.5 dBm

14. SEAMCAT Workshop Stella Lyubchenko / ECO Page 1405 October 2010 Power control –37.5dBm > -70dB (threshold) + 20 (dynamic range) iRSS Unwanted = -39.5dBm – g it PC = -59.5dBm 3

15. SEAMCAT Workshop Stella Lyubchenko / ECO Page 1505 October 2010 Multiple Interferers generation (Option 1)

16. SEAMCAT Workshop Stella Lyubchenko / ECO Page 1605 October 2010 Multiple Interferers generation (Option 2)

17. SEAMCAT Workshop Stella Lyubchenko / ECO Page 1705 October 2010 Multiple Interferers generation (Option 2) Distance between Wt and Vt = 1 km Position between Vr – It was fixed

18. SEAMCAT Workshop Stella Lyubchenko / ECO Page 1805 October 2010 Thank you