Dfh Multi-user Detection Techniques

The short-wave Differential Frequency Hopping technology represents the research direction of new generation of short-wave anti-jamming communications cheme,for its high performance, strong anti-interference and anti-fadingetc.The self-organizing wireless network is a combination network of mobile communications and computer networks, it has the ability of self-organization, since repair, self-configuring, self-management and so on. Wireless frequency-hopping self-organizing network combination of the above two technologies,and becoming an ideal of military communications network.Although thorough researches have been done on DFH,they are mostly restricted to the scope of single-user algorithms,only very few of them are focused on the subject of multi-user communication.Based on this premise,this thesis summarizes the authors'researches on DFH multi-user detection,including multiple-access performance and detection technology.The thesis briefly introductes the technology of conventional frequency-hopping, Differential Frequency-Hopping,wireless ad hoc networks profiles and the multi-user technology of Differential Frequency Hopping Wireless Ad Hoc Network.a detailed description of Differential Frequency Hopping communication system overall framework,And then gives the differential frequency hopping wireless ad hoc networks of several networking model, through a single user and multi-user group network model analysis, propose a low complexity differential frequency hopping multi-user detection algorithm, and the same time,gives theoretical analysis of the algorithm and simulation analysis. And gives the network the number of users and receive frequency sequence length and frequency between the quantitative relation between the set by selecting the appropriate network parameters,Through the actual networking requirements, refer to the quantitative relationship, can establish an ideal model of differential frequency hopping multi-user communication.At the end of this thesis,we summarize the work of this thesis and give the work tobe continued.