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扩频多址系统通信由于其优良的多址接入、低截获概率、抗干扰和强保密等特性使得它在军事通信、卫星通信和民用领域得到了广泛应用。针对复合序列扩频多址通信系统的干扰研究具有重要的现实意义。m序列由于具有良好的伪随机特性被广泛应用于保密通信、扩频通信和码分多址通信系统中．同级m序列之间的互相关函数的计算一直是m序列研究中的一个难点问题．研究表明：同级m序列之间的互相关函数可以归结为m序列与其某个采样序列之间的互相关函数．
本文在总结扩频多址系统通信应用复合序列互相关技术的基础上，利用已有的理论和方法，对扩频多址系统通信应用复合序列，给出了m序列基本性质、互相关特性；并证明了在某些特定条件下m序列的互相关函数的基本性质，给出其互相关函数值的具体分布。来研究扩频多址系统应用复合序列的相关问题。
本文首先简介了复合序列扩频通多址信系统的基本理论和伪随机序列的特点，然后介绍了m序列的基本性质，m序列的互相关性质以及m序列的互相关函数的计算。本文的重点是讨论m序列由于其良好的伪随机特性而占有非常重要的地位，人们常采用m序列或其它伪随机特性较好的基本序列通过非线性变换来构造新的伪随机特性好、非线性度高的伪随机序列．相关函数则是衡量一条序列伪随机特性的重要指标之一。最后，在对扩频多址系统应用复合序列的理论知识上利用m W复合序列规避窄带干扰的方法进行了计算机仿真，对比分析了扩频多址系统应用复合序列技术，证明了应用的可行性。最后总结全文，并对扩频多址通信系统的下一步研究工作进行展望。
Spread spectrum communication multiple address system because of their excellent multi-access access, low intercept probability, anti-jamming and strong character such as confidential military communications make it in, satellite communication and civilian areas to be used. For composite sequence spread spectrum multi-access interference system of communication research has the important practical significance. M series with good because pseudo-random characteristics are widely used toward secrecy from a parochial view communication, spread spectrum communication and code division multiple access (cdma) communication system. The m series shut the each other between the calculating has been m series in the study of a difficult problem. Research shows that: the m series the each other between close function can be attributed to m series and its a sampling sequence the each other between close function.
Based on the summarization of spread spectrum multi-access systems communication application composite sequence cross-correlation technique in the foundation, USES the existing theories and methods of spread spectrum multi-access systems communication application composite sequence, gives the m series, basic properties, characteristics of each other off; And proved in certain conditions m sequence of close function of basic properties of each other, give each other the specific distribution function value shut. To study the spread spectrum multi-access system application of composite sequence related problem.
This paper first briefly introduces composite sequence spread spectrum multiple address the letter the basic theory and system pseudo random sequence characteristics, and then introduced the m series basic properties, m sequence of each other and m sequence of nature shut off each other the calculating. This paper is the focus of the discussion m because of its good sequence pseudo-random characteristics and occupied a very important position, people often USES m sequence or other pseudo-random features good basic sequence through the nonlinear transform to construct the new pseudo-random characteristics, nonlinear degree is high pseudo random sequence. Relevant function is to measure a sequence pseudo-random characteristics of the one of important index. Finally, in multiple address to spread spectrum system application of composite sequence theory knowledge using m W composite sequence evasion of narrowband interference method of computer simulation, comparison and analysis on the spread spectrum multi-access system application composite sequence technology, proved the feasibility of application. Summing up the last, and spread spectrum communication system next multiple address of the research work was discussed.
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Based on the summarization of spread spectrum multi-access systems communication application composite sequence cross-correlation technique in the foundation, USES the existing theories and methods of spread spectrum multi-access systems communication application composite sequence, gives the m series, basic properties, characteristics of each other off; And proved in certain conditions m sequence of close function of basic properties of each other, give each other the specific distribution function value shut. To study the spread spectrum multi-access system application of composite sequence related problem.
This paper first briefly introduces composite sequence spread spectrum multiple address the letter the basic theory and system pseudo random sequence characteristics, and then introduced the m series basic properties, m sequence of each other and m sequence of nature shut off each other the calculating. This paper is the focus of the discussion m because of its good sequence pseudo-random characteristics and occupied a very important position, people often USES m sequence or other pseudo-random features good basic sequence through the nonlinear transform to construct the new pseudo-random characteristics, nonlinear degree is high pseudo random sequence. Relevant function is to measure a sequence pseudo-random characteristics of the one of important index. Finally, in multiple address to spread spectrum system application of composite sequence theory knowledge using m W composite sequence evasion of narrowband interference method of computer simulation, comparison and analysis on the spread spectrum multi-access system application composite sequence technology, proved the feasibility of application. Summing up the last, and spread spectrum communication system next multiple address of the research work was discussed.
欢迎采纳，谢谢！
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第1个回答 2012-06-27
Spread spectrum multiple access communication system due to the characteristics of its outstanding multiple access, low probability of intercept, anti-jamming and strong confidentiality it has been widely used in military communications, satellite communications and civilian fields. Composite sequence spread spectrum multiple access communication system interference has important practical significance. The pseudo-random m sequence is widely used in secure communications, spread spectrum communication and CDMA communication system. The calculation of cross-correlation function between the m sequence is always a major problem for m sequences in the study. Studies have shown that: the cross-correlation function of m sequences can be reduced to the cross-correlation between the m sequence and composite serial correlation in the underlying technology in some of the sampling sequence spread spectrum multiple access communication system summary function.Based using existing theories and methods to promote the application spectrum of the composite sequence of multiple access communication system, given the characteristics of the m sequence, correlation, and prove the basic properties of the correlation function of m-sequences of certain conditions. on the basis of cross-correlation function value distribution. Research related issues. Paper composite sequence spread spectrum multiple access applications, a brief introduction by the basic theory and pseudo-random sequence characteristics of the composite sequence spread spectrum multiple access communication system, and then describes the basic nature of the m sequence, m sequence, and m sequence features, cross-correlation function calculation. This article focuses on the m sequence occupies a very important position because of its good pseudo-random nature of the discussion, people often use m-sequences or other random features better basic sequence of non-linear transformation to build a new pseudo-random characteristics of the high non-linear pseudo-random sequence of functions is an important indicator of the measure of a sequence of pseudo-random characteristics. Finally, to prove the use of a composite sequence spread spectrum multiple access megawatt-class composite sequence to avoid interference composite sequence spread spectrum multi-access system in the application of computer simulation, and analysis methods of theoretical knowledge systems, applications, the feasibility of the application. The end of the thesis, spread spectrum multiple access communication system next.
第2个回答 2012-06-26
Spread spectrum multiple access communication system because of its excellent multiple access, low probability of intercept, anti-interference and strong confidentiality and other features make it in military communications, satellite communications and civil fields has been widely applied. According to the composite sequence spread spectrum multiple access communication system interference research has important practical significance. Because m sequence pseudorandom is widely used in secure communication, spread spectrum communication and CDMA communication system. The m sequence between the cross-correlation function of the calculation is always m sequences in the study of a difficult problem. Study shows that: the m sequence between the cross-correlation function can be reduced to m sequence and its some a sampling sequence between the cross correlation function.
Based on the summary of spread spectrum multiple access communication system of application of composite sequence correlation technique based on, using the existing theory and methods, to spread spectrum multiple access communication system of application of composite sequence, given m sequence properties, cross-correlation properties; and proves that under some particular conditions correlation function of m sequence based on the basic nature, the cross-correlation function values of the specific distribution. To study the application of composite sequence spread spectrum multiple access system of related problems.
This paper briefly introduces the composite sequence spread spectrum multiple access communication system through the basic theory and the pseudo random sequence characteristics, and then introduces the basic properties of m sequence, m sequence and m sequence correlation properties of cross-correlation function calculation. This paper focuses on the discussion of m sequences because of its good pseudorandom properties and occupies a very important position, people often use m sequences or other random characteristic better basic sequence by the nonlinear transformation to construct new pseudo-random characteristic, higher nonlinearity pseudo random sequence correlation function is a measure of a sequence of pseudo one of the important indexes of random characteristics. Finally, in the application of composite sequence spread spectrum multiple access system of theoretical knowledge on the use of M W composite sequence to avoid interference method of computer simulation, comparison and analysis of the application of composite sequence spread spectrum multiple access system, proved the feasibility of the application of. At the end of the thesis, and the spread spectrum multiple access communication system to the next step of research work.
Based on the summary of spread spectrum multiple access communication system of application of composite sequence correlation technique based on, using the existing theory and methods, to spread spectrum multiple access communication system of application of composite sequence, given m sequence properties, cross-correlation properties; and proves that under some particular conditions correlation function of m sequence based on the basic nature, the cross-correlation function values of the specific distribution. To study the application of composite sequence spread spectrum multiple access system of related problems.
This paper briefly introduces the composite sequence spread spectrum multiple access communication system through the basic theory and the pseudo random sequence characteristics, and then introduces the basic properties of m sequence, m sequence and m sequence correlation properties of cross-correlation function calculation. This paper focuses on the discussion of m sequences because of its good pseudorandom properties and occupies a very important position, people often use m sequences or other random characteristic better basic sequence by the nonlinear transformation to construct new pseudo-random characteristic, higher nonlinearity pseudo random sequence correlation function is a measure of a sequence of pseudo one of the important indexes of random characteristics. Finally, in the application of composite sequence spread spectrum multiple access system of theoretical knowledge on the use of M W composite sequence to avoid interference method of computer simulation, comparison and analysis of the application of composite sequence spread spectrum multiple access system, proved the feasibility of the application of. At the end of the thesis, and the spread spectrum multiple access communication system to the next step of research work.
第3个回答 2023-03-06
Technology around us needs to be improved in many ways. Reliability and durability of electronic products should be enhanced by strengthening tests and quality assurance. Energy utilization efficiency should also be improved by increasing research and development efforts. Furthermore, new applications of emerging fields such as Internet of T_
第4个回答 2012-07-03
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