ZHOU Yi-gang1, SHI Ying1. Performance of modified multiple access scheme for DCSK[J]. 2008, (4): 136-140.DOI：
改进型DCSK多址接入方案及其性能分析
摘要
在对TLMA-DCSK多址接入方案进行分析的基础上
提出了一种改进的TLMA-DCSK多址接入方案。在改进方案中
信道中各用户的参考信号占用不同时隙
相互无干扰
而数据信号叠加传输。在高斯白噪声信道和多径瑞利衰落信道中分别对改进方案进行误码性能分析
并与原方案比较。理论分析及仿真实验表明改进方案改善了系统性能。
Abstract
Based on the time-delay-based multiple access DCSK
a modified TLMA-DCSK scheme was proposed. In the modified scheme
to reduce excessive interference
the reference samples occupied the different slots for different users
but the data samples occupied the same slots for all users. To compare with TLMA-DCSK
the performance was evalu-ated in terms of the bit error rate （BER） under AGWN channel model and multipath Rayleigh fading channel model. Theoretic analysis and simulation results show that the proposed scheme is better than TLMA-DCSK in BER.
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