Analysis of Influence Factors of Narrow-Band Interference on Direct Sequence Spread Spectrum Communication System
Bing Wang
Abstract
Bing Wang
Abstract
The expression for processing the gain by the direct sequence spread spectrum(DSSS) communication system is derived from the form that the gained narrow band signals pass through the dispreading and demodulation module of DSSS receiving system.The characteristic that the system withstands the narrow-band interference is analyzed theoretically.The factors that affect the antijamming capability of the system are also analyzed.The conclusions that the antijamming capability is not only related to the magnification of DSSS,but also to the form of narrow-band interference and the relative position of the carrier,are abtained.
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The expression for processing the gain by the direct sequence spread spectrum(DSSS) communication system is derived from the form that the gained narrow band signals pass through the dispreading and demodulation module of DSSS receiving system.The characteristic that the system withstands the narrow-band interference is analyzed theoretically.The factors that affect the antijamming capability of the system are also analyzed.The conclusions that the antijamming capability is not only related to the magnification of DSSS,but also to the form of narrow-band interference and the relative position of the carrier,are abtained.
Key concepts: Direct-sequence spread spectrum, Process gain, Spread spectrum, Interference (communication), Demodulation, Computer science, Communications system, Electronic engineering