Study On Pseudo-random Sequence In Spread Spectrum Communication System And Generational Gorithm Simulation

Spread spectrum communication is a new modulation theory and technology which is different from the conventional communication system for the purpose of improving the reliability of information transmission.Spreading sequence, also known as pseudo noise sequence, pseudo-random sequence. In the spread spectrum communication system, the pseudo random sequence is the only symbol to distinguish the user.In addition to play an important role in the spread spectrum communication system, in the radar, navigation and cryptography, and many other important technical fields have a wide range of applicationsIn this paper we mainly study the pseudo random sequence in spread spectru communication. With the development of information technology, The characteristics of the sequence requires more and more better.The main research contents of this dissertation are as follows;The first part of the structure of the m sequence as the starting point, the use of two kinds of sequence generation algorithm, shift register algorithm and track function algorithm, detailed description of the production process of the two algorithms.In the second part, a new two element is constructed on the basis of the existing No sequence, which has a low correlation sequence of 5 values,at the same time, the representation form of the trace function of the sequence is given,and the correlation of the new sequences is proved,at the same time, through the trace function relation between the existing GMW sequence and the cascaded GMW sequence, the new sequence is expanded, and the linear complexity and the number of the new sequences are further expanded.In the third part of this paper the simulation to achieve the track function algorithm and the new fast generation algorithm, and compared the running time of the two algorithms...