This only applies for protection between stations of different licensees, where a minimum separation distance of 45 km between PTS base stations of different licensees is applicable. No minimum separation distance applies to different stations operated by the same licensee. In such cases, it is expected that the licensee would manage interference between such stations. General Separate protection criteria for analog system interferers have not been defined. Digital criteria shall be applied in such cases. When PTS channels are greater than 5 MHz protection criteria should be scaled accordingly. Attachment 2b: Protection Criteria: 1.8 GHz, 2.1 GHz and 2.2 GHz fixed link receivers PROTECTION RATIOS For the purposes of this attachment adjacent channels are defined with respect to the victim receiver’s channel size. For example, in the case of an interference assessment for a PTS transmitter operating in a 5 MHz channel interfering into a point-to-point receiver operating in a 14 MHz channel, the first adjacent channel refers to the 14 MHz channels either side of the victim receiver’s occupied channel. The same logic is used to determine 2nd and 3rd adjacent channels. Victim 1.8 GHz, 2.1 GHz or 2.2 GHz link receiver and Interfering PTS transmitter Frequency Offset REQUIRED PROTECTION (dB) (MHz) Digital Interferer Tx Digital Victim Rx Co-channel 60 1st Adjacent 30 Channel 2nd Adjacent 0 Channel 3rd Adjacent Channel General Protection ratios are based on a 60 km path length and PL (Percentage of time that the average refractivity gradient in the lowest 100 m of the atmosphere is less than or equal to 100 N units/km) of 20. For other path lengths and PL values refer to the correction factor graph at Attachment 2c. Separate protection ratios for analog victims have not been defined. The above-mentioned protection ratios for digital systems shall be applied in such cases.
This only applies for protection between stations of different licensees, where a minimum separation distance of 45 km between PTS base stations of different licensees is applicable. No minimum separation distance applies to different stations operated by the same licensee. In such cases, it is expected that the licensee would manage interference between such stations. General Separate protection criteria for analog system interferers have not been defined. Digital criteria shall be applied in such cases. When PTS channels are greater than 5 MHz protection criteria should be scaled accordingly. Attachment 2b: Protection Criteria: 1.8 GHz, 2.1 GHz and 2.2 GHz fixed link receivers PROTECTION RATIOS For the purposes of this attachment adjacent channels are defined with respect to the victim receiver’s channel size. For example, in the case of an interference assessment for a PTS transmitter operating in a 5 MHz channel interfering into a point-to-point receiver operating in a 14 MHz channel, the first adjacent channel refers to the 14 MHz channels either side of the victim receiver’s occupied channel. The same logic is used to determine 2nd and 3rd adjacent channels. Victim 1.8 GHz, 2.1 GHz or 2.2 GHz link receiver and Interfering PTS transmitter Frequency Offset (MHz) REQUIRED PROTECTION (dB) Digital Interferer Tx Digital Victim Rx Co-channel 60 1st Adjacent Channel 30 2nd Adjacent Channel 0 3rd Adjacent Channel General Protection ratios are based on a 60 km path length and PL (Percentage of time that the average refractivity gradient in the lowest 100 m of the atmosphere is less than or equal to 100 N units/km) of 20. For other path lengths and PL values refer to the correction factor graph at Attachment 2c. Separate protection ratios for analog victims have not been defined. The above-mentioned protection ratios for digital systems shall be applied in such cases.
IFC%2011%202015%20Draft%20RALI%20MS%2033%20docx.docx