Modelling of Emission and Blocking mask European Communications Office Jean-Philippe Kermoal (ECO) October 2010 EUROPEAN COMMUNICATIONS OFFICE Nansensgade 19 DK-1366 Copenhagen Denmark Telephone: Telefax: Web Site:

SEAMCAT Workshop Jean-Philippe Kermoal / ECO Page 205 October 2010 Outline Input to SEAMCAT General CDMA Unwanted emission mask – BS example – UE example ACLR Blocking mask ACS Emission floor

SEAMCAT Workshop Jean-Philippe Kermoal / ECO Page 305 October 2010 Input to SEAMCAT The emission mask defaults value Remove the default using the Clear button. Then use the add button to add the enough blank rows for half of the emission mask. Note the format of the data: – Offset = MHz – Unwanted = dBc – Reference bandwidth = kHz

SEAMCAT Workshop Jean-Philippe Kermoal / ECO Page 405 October 2010 Input to SEAMCAT Then use the Sym button to get a symetric mask

SEAMCAT Workshop Jean-Philippe Kermoal / ECO Page 505 October 2010 Reference/normalised bandwidth Once SEAMCAT has generated the whole mask, first check that the values are in the correct order. The unwanted emission diagram shows two masks The red mask is the representation using the user defined reference bandwidth. The blue mask is normalised to 1MHz measurement bandwidth. The user may normalise his input to 1MHz bandwidth but it can be useful to input the mask in the bandwidth defined in the standard and allow SEAMCAT to create normalised mask.

SEAMCAT Workshop Jean-Philippe Kermoal / ECO Page 605 October 2010 Store your mask Spectrum mask can be saved as.txt file it can be reused for other workspaces using load buttons.

SEAMCAT Workshop Jean-Philippe Kermoal / ECO Page 705 October 2010 General The following range of attenuation is considered, for a system of 30dBm using a 20kHz emission bandwidth. The reference bandwidth for the attenuation is 10kHz. Within the emission bandwidth the reference bandwidth is taken equal to the emission bandwidth. Note: The technical specifications of the receiver and transmitter are commonly extracted from the ETSI standard (see

SEAMCAT Workshop Jean-Philippe Kermoal / ECO Page 805 October 2010 CDMA emission mask - BS example Assuming a BS Tx power of 43 dBm, and with addition of the ITU-R SM.329 limit above 12.5 MHz Spectrum emission mask values, BS maximum output power P  43 dBm (TS25.104)

SEAMCAT Workshop Jean-Philippe Kermoal / ECO Page 905 October 2010 CDMA emission mask - UE example

SEAMCAT Workshop Jean-Philippe Kermoal / ECO Page 1005 October 2010 ACIR = f(ACLR, ACS) ACIR = adjacent-channel interference ratio In UL, the dominant part of ACIR is due to the UE adjacent channel leakage (ACLR) i.e. ACS BS is very large compare to ACLR UE and ACIR ≈ ACLR UE. In DL, the dominant part of ACIR is due to the UE frequency selectivity (ACS) i.e. ACLR BS is very large compare to ACS UE and ACIR ≈ ACS UE

SEAMCAT Workshop Jean-Philippe Kermoal / ECO Page 1105 October 2010 ACLR in SEAMCAT No use of the ACLR directly. Emission spectrum Mask is used

SEAMCAT Workshop Jean-Philippe Kermoal / ECO Page 1205 October 2010 Blocking Mask User-defined mode Protection ratio Sensitivity modes fvfv Receiver Mask fIfI Rx bandwidth Rejection of the receiver ACS (ETSI) Blocking (ETSI) + Blocking: Blocking Response = (PR and Sensitivity mode) fvfv Receiver Mask fIfI Rx bandwidth Rejection of the receiver Blocking Response = filtering (user defined mode) Blocking:

SEAMCAT Workshop Jean-Philippe Kermoal / ECO Page 1305 October 2010 BS blocking Mask

SEAMCAT Workshop Jean-Philippe Kermoal / ECO Page 1405 October 2010 ACS in SEAMCAT ACS is the same as the blocking attenuation input

SEAMCAT Workshop Jean-Philippe Kermoal / ECO Page 1505 October 2010 Emission Floor This emission floor mask (frequency offset (MHz), emission floor (dBm), reference bandwidth (MHz)). Useful when power control is used

SEAMCAT Workshop Jean-Philippe Kermoal / ECO Page 1605 October 2010 Thank you - Any Questions?