中频数字相关处理的研究
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摘要
本文概括地论述了现代通信和扩频通信的基本原理，详细地论
述了中频数字相关处理的原理以及实现的方法。
现在的电子设备中，大多采用数字集成电路来实现其各种复杂
的功能，而采用模拟电路来实现各种复杂功能的已经越来越少。在
通常情况下，只在微弱信号放大、高速数据采集和大功率输出等局
部采用模拟电路，其余部分均采用数字电路。随着超大规模集成电
路以及专用数字芯片的迅猛发展，以前常用的模拟电路渐渐地被数
字集成电路所取代。本课题研究的主要目的就是利用现代数字技术
对扩频通信系统中的中频接收信号进行相关处理。在文章中作者详
细地讨论了匹配滤波器原理及信号采样原理，并详细地介绍了如何
利用专用数字芯片实现中频信号的相关处理以及所用专用芯片的性
能和结构，文中同时给出了具体地实现原理和实现的电路图。本文
讨论的中频数字相关处理方法为将来接收机接收通道的数字化打下
了坚实地基础。
In this paper, we discuss the basic principle of the modernity
communication and the spread-spectrum communication, discuss the
principle of IF digital correlative processing and the realizing method.
At present, the equipment with complex function is gradually
replaced by digital circuit design. The function with analogue in the
complicated design is delayed out little by little. In generally, the means
of analogue is only applied to the limited design, such as weak-signal
amplified high-speed sampling and high-power outputting; but the
other design with digitize. In the wake of developments in VLSI and
ASIC, the analogue circuit is slowly replaced by digital circuit. The
purpose of this paper is that taking use of modern digital technical apply
at correlative processing in the IF signal of spread-spectrum system. In
this paper, we detail the principle of the matched filter and the signal
sampling, introduce how to process the IF signal by ASIC, and introduce
the ASIC’s function and constitution. We supply detailed principle
diagram and circuit diagram in the paper. The method of IF digital
correlative processing that is the basic of digitize of receiver’s channel.
述了中频数字相关处理的原理以及实现的方法。
现在的电子设备中，大多采用数字集成电路来实现其各种复杂
的功能，而采用模拟电路来实现各种复杂功能的已经越来越少。在
通常情况下，只在微弱信号放大、高速数据采集和大功率输出等局
部采用模拟电路，其余部分均采用数字电路。随着超大规模集成电
路以及专用数字芯片的迅猛发展，以前常用的模拟电路渐渐地被数
字集成电路所取代。本课题研究的主要目的就是利用现代数字技术
对扩频通信系统中的中频接收信号进行相关处理。在文章中作者详
细地讨论了匹配滤波器原理及信号采样原理，并详细地介绍了如何
利用专用数字芯片实现中频信号的相关处理以及所用专用芯片的性
能和结构，文中同时给出了具体地实现原理和实现的电路图。本文
讨论的中频数字相关处理方法为将来接收机接收通道的数字化打下
了坚实地基础。
In this paper, we discuss the basic principle of the modernity
communication and the spread-spectrum communication, discuss the
principle of IF digital correlative processing and the realizing method.
At present, the equipment with complex function is gradually
replaced by digital circuit design. The function with analogue in the
complicated design is delayed out little by little. In generally, the means
of analogue is only applied to the limited design, such as weak-signal
amplified high-speed sampling and high-power outputting; but the
other design with digitize. In the wake of developments in VLSI and
ASIC, the analogue circuit is slowly replaced by digital circuit. The
purpose of this paper is that taking use of modern digital technical apply
at correlative processing in the IF signal of spread-spectrum system. In
this paper, we detail the principle of the matched filter and the signal
sampling, introduce how to process the IF signal by ASIC, and introduce
the ASIC’s function and constitution. We supply detailed principle
diagram and circuit diagram in the paper. The method of IF digital
correlative processing that is the basic of digitize of receiver’s channel.
引文
【1】 "The Effect of Multipath Interference on the Performance of a Digital Matched Filter", JIN-FU CHANG, IEEE Trans. Commun.,vol. COM-27, pp.736-745, Apr. 1979
【2】 "Non-Coherent Digital Matched Filters: Multibit Quantization",L. Lim, IEEE Trans. Commun., vol. COM-26, pp.409-419, Apr. 1978
【3】 "MinimX Strategies for Matched Filter Detection", G.L. Turin, IEEE Trans. Commun. Pp. 1370-1372, Nov. 1975
【4】 "An Introduction to Matched Filters", G.L. Turin, IRE Trans. Inform.Theory, vol. IT-6, pp.352-371, June 1960
【5】 "STEL-3310 Data Sheet", STANFORD TELECOM. ASIC&Custom Products Division, 1995
【6】 "STEL-2130 Data Sheet", STANFORD TELECOM. ASIC&Custom Products Division, 1995
【7】 "Analog Devices Introduction", AD. Products, 1996
【8】 "Lattice Semiconductor Data Book", 1996
【9】 “信号检测与估计”，向敬成、王意青等著，国防工业出版社，1990年
【10】 “现代通信原理”，曹志刚、钱亚生著，清华大学出版社，1992年
【11】 “扩频选址通信”，李振玉、卢玉民著，国防工业出版社，1988年
【12】 “在系统编程技术及其应用”，黄正瑾著，东南大学出版社，1997年
【13】 “非相干数字相关器的多比特量化研究”，硕士论文，王枫著，四川大学无线电系，1996年
【2】 "Non-Coherent Digital Matched Filters: Multibit Quantization",L. Lim, IEEE Trans. Commun., vol. COM-26, pp.409-419, Apr. 1978
【3】 "MinimX Strategies for Matched Filter Detection", G.L. Turin, IEEE Trans. Commun. Pp. 1370-1372, Nov. 1975
【4】 "An Introduction to Matched Filters", G.L. Turin, IRE Trans. Inform.Theory, vol. IT-6, pp.352-371, June 1960
【5】 "STEL-3310 Data Sheet", STANFORD TELECOM. ASIC&Custom Products Division, 1995
【6】 "STEL-2130 Data Sheet", STANFORD TELECOM. ASIC&Custom Products Division, 1995
【7】 "Analog Devices Introduction", AD. Products, 1996
【8】 "Lattice Semiconductor Data Book", 1996
【9】 “信号检测与估计”，向敬成、王意青等著，国防工业出版社，1990年
【10】 “现代通信原理”，曹志刚、钱亚生著，清华大学出版社，1992年
【11】 “扩频选址通信”，李振玉、卢玉民著，国防工业出版社，1988年
【12】 “在系统编程技术及其应用”，黄正瑾著，东南大学出版社，1997年
【13】 “非相干数字相关器的多比特量化研究”，硕士论文，王枫著，四川大学无线电系，1996年