A METHOD AND DEVICE FOR ANALYZING BIT ERROR RATE OF DM-DQPSK SYSTEM BASED ON CHIRP SPREAD SPECTRUM IN THE PRESENCE OF PARTIAL BAND JAMMING SIGNALS

摘要

PURPOSE: A method and a device thereof are provided to analyze the influence of a partial bandwidth jammer signal regarding the bit error rate performance of a DM-DQPSK system based on a chirp spread spectrum by obtaining a signal to noise ratio. CONSTITUTION: A variation of a partial bandwidth jammer signal and a power spectrum are modeled in a CSS system. A signal to noise ratio is modeled in the bandwidth of the partial bandwidth jammer signal in the CSS system. The bit error rate performance variation regarding the partial bandwidth jammer signal is verified through a simulation process. The noise power spectral density of a jammer is modeled according to the ratio of the bandwidth of the partial jammer within the bandwidth of a spread bandwidth signal.