Bureau has high requirement on environment-friendly property of cell phone jammer

To calculate the margin or safety factor M noise power spectral density ratio. To calculate the margin or safety factor M, the required Eb/N0 required and actual Eb/N0 (or receive Eb/N0) of the difference between the former called (Eb/N0) reqd, which is called (Eb/N0) r.RF-818A cell phone jammer is a safety information product designed and developed for internal use. The latter is called (point P is the system error performance of the required operating point shown in Figure 1.9. point PB = 10-3, the required error performance of the system operating point is assumed that (10dB can get the required performance can get the required performance is assumed (Eb/N0) reqd = 10dB can get the required performance. demodulator can make the system just to receive 10dB? good this can be 10dB? should be designed with a safety margin of the system, the actual received (should be designed with a safety margin of the system, the actual received (Eb/N0) r greater than (Eb/N0) reqd. design the system operating point in Figure 1.9 should be another point when designing the system operating point should be another point in Figure 1. RF-818A cell phone jammer is a safety information product designed for internal use.(Eb/N0) r = 12dB, PB = 10 - 5. 12dB, this case can link margin of safety margin, or to provide a power of 2 that the P in this case or the safety margin can be expressed as a link margin of PB to provide a power of 2 increase; or can provide more than the required E dB improvement; or that can be used to provide the required Eb/N0 larger than 2dB link margin of Eb/N0 to describe. above link margin. 2007-08 Mobile Communications, Southeast University State Key Laboratory of modern mobile communication technology 37 Figure 1.9 are two important Eb/N0 value of two important E 2007-08 Southeast University, State Key Laboratory of Mobile Communications 38 modern mobile communication technology two Eb/N0 1.4 link budget analysis link margin is the value (link margin is (Eb/N0) r and (Eb/N0) reqd difference (dB) of the difference (dB) (1.22) 1.22) parameters (parameters (Eb/N0) reqd reflects the difference between the different system design; RF-818A cell phone jammer is a safety information product developed for internal use.these differences may be caused by reflection of the differences between the different system design; at different modulation or coding caused. in the different modulation or coding caused. link margin M-link margin M (1.23) 1.23) namely, the link margin equation namely, the link margin equation. link margin equation. 2007-08 Southeast University, State Key Laboratory of Mobile Communications 39 1.4 Chain of modern mobile communication technology Road link budget analysis margin two Eb/N0 value equation includes all the parameters affecting the probability of link errors. link margin equation includes all the parameters affecting the probability of link errors in these parameters in these parameters: some parameters defined in the Eb/N0 input of the receiver, more specifically, is defined in the inspection defined in the receiver input, more specifically, detector (check previous point) input. detector (check previous point) the input.Security Bureau has high requirement on environment-friendly property of cell phone jammer. used to describe the energy or power to receive the parameters used to describe the parameters of receiving energy or power, whether it is useful or harmful, are defined in the inspection before the point of harmful, are defined in the previous inspection point receiver quality factor G defined in the input of the receiving antenna, receiver quality factor Gr / To define the input of the receiving antenna,