| UP | AT BOTTOM | ||
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| Asynchronous Multiuser Performance Analysis of Differential Frequency Hopping System Over Rayleigh-fading Channel | |||
| Chen,Zhi | University of Electronic Science and Technology of China | ||
| Differential Frequency Hopping (DFH) is a novel technique for the frequency-hopping system in HF (High Frequency) bands. The frequency transition function (FTF) and the signal detection methods are the key issues for DFH system. A novel non-coherent detection scheme is proposed in asynchronous multi-user environments over Rayleigh-fading channels. With this novel detection scheme, the asynchronous multi-user performance of DFH is analyzed and validated by simulation. The results of analyses and simulations prove that the performance of asynchronous multi-user DFH system outperform that of synchronous multi-user DFH system over Rayleigh-fading channel, and the novel detection scheme can achieve better performance than the conventional non-coherent detection scheme in asynchronous multi-user environments. | |||
| Zhi Chen(S’03–M’04) received the B.S.E. degree, M.S. degree and Ph.D degree in Communication and Information Systems from University of Electronic Science and Technology of China (UESTC), in 1996, 2000, and 2006, respectively. He is now with the National Key Lab of Communication in UESTC. His research interests lie in the areas of wireless communication and signal processing, with special interest in the performance evaluations of anti-jam spread-spectrum communication systems and multi-user detection in CDMA systems. | |||