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A novel non-coherent detection scheme for differential frequency hopping(DFH)system is proposedin asynchronous multi-user environments over Rayleigh-fading channels.The synchronous and asyn-chronous multi-user performances of DFH with the conventional detection scheme and this novel detectionscheme are analyzed,respectively.The performance results are validated with simulation.The results ofanalyses and simulations prove two conclusions.Firstly,the performance of asynchronous multi-user DFHsystem overcomes that of synchronous multi-user DFH system over Rayleigh-fading channel.Secondly,the novel detection scheme can achieve better performance than the conventional non-coherent detectionscheme in asynchronous multi-user environments.
A novel non-coherent detection scheme for differential frequency hopping (DFH) system is proposed in asynchronous multi-user environments over Rayleigh-fading channels. The synchronous and asyn-chronous multi-user performances of DFH with the conventional detection scheme and this novel detectionscheme are analyzed, respectively.The performance results are validated with simulation.The results ofanalyses and simulationsprove two conclusions.Firstly, the performance of asynchronous multi-user DFHsystem overcomes that of synchronous multi-user DFH system over Rayleigh-fading channel .Secondly, the novel detection scheme can achieve better performance than the conventional non-coherent detectionscheme in asynchronous multi-user environments.