Abstract:

On the principle of the receiver’s sensitivity, the model of the k level adjacentchannel interference is determined through the test of emitting spectrum of a typical radio. In consideration of the communication frequency, the available frequency points, station number, parameters of channel and fixed interference, the concept of “communication field” is proposed. Through the analysis of the distribution function of the signal to interference and noise ratio (SINR) on the receiving end, the formula of the outage probability is derived of the FH system under the communication field conditions. From the point of view of information entropy of the signal to interference, and using the entropy power inequality the formula of communication capacity is derived of the FH system under communication field conditions. Through the analysis of the radio’s emitting spectrum, the model of three adjacent channel interferences is obtained which can effects the receiver’s sensitivity. Taking the model above as the parameters of simulation, the outage probability and communication capacity are evaluated under the communication field conditions. The simulation results verify the correctness of the theoretical derivation.