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Volume 31 Issue 3
Dec.  2010
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Li Hui, Song Yao-liang, Yang Yu-wang. A Novel Time-Hopping Multiple-Access DCSK System Designing and Analysis[J]. Journal of Electronics & Information Technology, 2009, 31(3): 756-758. doi: 10.3724/SP.J.1146.2007.01649
Citation: Li Hui, Song Yao-liang, Yang Yu-wang. A Novel Time-Hopping Multiple-Access DCSK System Designing and Analysis[J]. Journal of Electronics & Information Technology, 2009, 31(3): 756-758. doi: 10.3724/SP.J.1146.2007.01649

A Novel Time-Hopping Multiple-Access DCSK System Designing and Analysis

doi: 10.3724/SP.J.1146.2007.01649
  • Received Date: 2007-10-17
  • Rev Recd Date: 2008-01-21
  • Publish Date: 2009-03-19
  • The common multiple-access schemes for Differential Chaos Shift Keying (DCSK) system have two disadvantages. Firstly, all users share the same slot, only method to decrease multiple-access interference is utilizing the low correlativity of chaotic signal. Secondly, the transmitted signals for reference and symbol are not same or reverse, so the strong anti-multipath character is destroyed. A novel time-hopping multiple-access scheme for DCSK system is put forward. It assigns different PN time-hopping codes to different users. The signals for reference and symbol in a frame have the same time-hopping value. In AWGN channel the systems bit error rate is obtained in theory. Analysis and simulation show that time-hopping multiple-access scheme can overcome above two disadvantages and has lower bit error rate.
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