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A8.7 A8.7

Based on the definition and measurement procedure of blocking, it is possible to obtain the receiver attenuation parameter a_VLR(Df) from the following fundamental relationships between wanted and unwanted signals, receiver sensitivity and noise, as observed when blocking event is triggered:

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F397 F397

Figure 395397: Relationship between signal levels when blocking occurs
(Protection Ratio and Sensitivity modes)

...

            (N+I)/N                          1 dB

 

a)         blocking mode "Sensitivity"
            limit:                            -45 dBm

  

b)         blocking mode "Protection ratio"           

...

                                                

75 dB