| TH-BPSK与TH-PPM超宽带系统性能分析及比较 |
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| 引用本文： | 沙学军,宁晓燕,吴宣利.TH-BPSK与TH-PPM超宽带系统性能分析及比较[J].南京邮电大学学报(自然科学版),2006,26(2):29-33. |
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| 作者姓名： | 沙学军 宁晓燕 吴宣利 |
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| 作者单位： | 哈尔滨工业大学,电子与信息技术研究院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 对于使用窄脉冲传输数据的超宽带系统,从理论上分析了在TH-BPSK和TH-PPM两种调制方式下系统的信干噪比,从概率角度详细估计了系统噪声的影响。然后对两种调制方式下系统的性能进行了比较,在单用户情形下得到TH-BPSK系统性能恒比TH-PPM好的结论;在考虑系统噪声的多用户情形下给出了一个判决量的计算公式,该判决量仅由基本接收脉冲波形和用户数决定,根据判决量的值可以判断是TH-PPM系统性能好还是TH-BPSK系统性能好。文中给出了应用高斯各阶导数作接收脉冲时系统的信干噪比随用户数的变化情况。结果表明用高斯函数的各阶导数作接收脉冲时,TH-BPSK系统性能比TH-PPM系统性能好。
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| 关 键 词： | 超宽带 |
| 文章编号： | 1673-5439（2006）02-0029-05 |
| 收稿时间： | 2005-11-10 |
| 修稿时间： | 2005年11月10 |
Performance Analysis and Comparison of Ultra Wideband TH-BPSK and TH-PPM Systems |
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| SHA Xue-jun,NING Xiao-yan,WU Xuan-li.Performance Analysis and Comparison of Ultra Wideband TH-BPSK and TH-PPM Systems[J].Journal of Nanjing University of Posts and Telecommunications,2006,26(2):29-33. |
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| Authors: | SHA Xue-jun NING Xiao-yan WU Xuan-li |
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| Institution: | School of Electronic and Information Technology, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | In this paper we analyze the SINR(Signal to Interference and Noise Ratio) of UWB systems,which transmit data information using short pulses with different modulation schemes: TH-BPSK and TH-PPM.From the perspective of probability,the effect of the system noise is estimated in detail.A comparison between the two kinds of UWB systems is carried out and the result shows that the performance of TH-BPSK always exceeds that of TH-PPM in the single-user system;In the multi-user system,when the receiver noise is considered, a decision variable that is completely determined by the received pulse shape and the number of the users is defined to evaluate the performance of these two UWB systems.When the received pulse is derivations of Gauss function,the performance of TH-BPSK is better than that of TH-PPM system. |
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| Keywords: | TH-BPSK TH-PPM |
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