Research Of Communication Protocol For Wireless In Complicated Environment Based On Software WirelessRadio

Development of Wireless communications technology make the wireless device can change their base band,way of modulate and channel coding.When in a complicated environment,the wireless communication devices can try to improve the quality of communication.In applications,if we try these ways to improve the communication quality,all the parameters of the communication should be kept same. So we need a set of communication protocol to improve communication quality, including speed,and band usage.This paper put a basic framework of the communication protocol.This paper talked about the current star of the wireless communications;several source of disturb,communication quality detection,include quality detection based on field strength and Carrier/Interference and quality detection based on bit error rate;ways can be used to improve the communication quality, including using several kinds of channel coding,change the frequency of the base band,change the way of modulation;jumping synchronization method,including synchronization head and self synchronization combined method which is used in channel coding jumping,synchronization method based on time of day information which is used in frequency jumping,synchronization method based on synchronization head which is used in modulation jumping.We tryed to establish spread spectrum,and test the effect.We make a contact with research of wireless communication protocol in complicated environment.