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reed-solomon码在ct2中的应用仿真,reed-solomon码在ct2中的应用仿真摘要reed—solomon码是根据这种码的两个发明入的名字reed和solomon命名的,它是一种具有很强纠错能力的多进制bch码,简称rs码。对于一个m进制rs码,它的输入信号和输出信号的取值范围都等于[0,m-1],其中m=2*m。rs码的码字长度n等于n=m-1=2...
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Reed-Solomon码在CT2中的应用仿真

摘要
Reed—Solomon码是根据这种码的两个发明入的名字Reed和Solomon命名的,它是一种具有很强纠错能力的多进制BCH码,简称RS码。对于一个M进制RS码,它的输入信号和输出信号的取值范围都等于[0,M-1],其中M=2*m。RS码的码字长度n等于n=M-1=2*m—1,如果信息位的长度等于k,则监督位的长度r=n-k。另外,RS码具有很强的纠错能力,假设它能够纠正t个错,则RS码的监督位长度r和t之间应该满足关系r=n-k=2t,因此,RS码的码字长度与信息位长度之间的差值应该是一个偶数,同时,贴的最小码元距离d=r十1=2t+l。
本文将结合CT2介绍了RS码的应用及其性能,同时通过RS码在CT2中的应用这个实例来详细介绍MATLAB中的建模仿真工具Simulink的功能、特点和建模方法及其在通信仿真方面的应用。
CT2仿真系统由信源、信道、信宿三个模块组成,信源模块有随机整数产生器、RS编码器、填充模块、帧状态转换模块以及MATLAB函数模块组成;信道模块采用二进制对称信道;信宿模块有MATLAB函数调用模块、帧状态转换模块、填充模块、RS解码器模块以及误比特率统计模块组成。

关键词:RS码;参数设置;第二代无绳电话系统


ABSTRACT
Reed-Solomon codes are based on the code of two inventions into naming names Reed and Solomon, which is a very strong correction of errors add more capacity BCH codes, as RS codes. M RS code for a pilot, it signals the import and export of signals Quzhi scope to [0,M-1] which M=2*m. RS code length n is the numeral n=M-1=2*m-1, if k is the length information spaces, the length of supervision spaces r=n-k. In addition, RS code is highly rectification capacity, assuming it can correct a wrong t, RS codes supervision spaces length r and t should satisfy relations between r=n-k=2t, RS code word length of the code and information spaces between the length of the margin should be an even-numbered, and with the smallest distance codes million = r+1=2t+l.
The RS codes will be introduced in conjunction with CT2 applications and their performance, and through the RS code in the application of the CT2 examples to detail the modelling simulation tools MATLAB Simulink functions, features and modelling methods and their applications in the communications revolution.
CT2 simulation system by the letter sources, routes, letter places three modules, letter random integer generated by a source module, RS coding devices, filling module, conversion modules, as well as pictures of MATLAB function modules; Access module using binary system symmetrical corridors; MATLAB function modules are available places letter modules, pictures of conversion modules, filling module, RS decoder modules and mistakenly spaces rate statistics modules.

Key Words:
RS codes; Parameters set;Second generation cordless telephone system

参考文献
1 邓华等.MATLAB通信仿真及应用实例详解.北京:人民邮电出版社,2003.
2 吴大正等. MATLAB及在电子信息课程中的应用.北京:电子工业出版社,2003.
3 孙屹等. Simulink通信仿真开发手册. 北京:国防工业出版社,2004.