基于Matlab实现误比特率与信噪比关系的仿真  

Simulation of Relation between BER and SNR Based on Matlab

作　　者：崔玉娟[1] 曲凯[1] 

机构地区：[1]中国电子科技集团公司第二十七研究所,郑州450047

出　　处：《电光系统》2014年第3期14-18,共5页Electronic and Electro-optical Systems

摘　　要：文章基于Maflab实现信号无编码及卷积码在不同调制模式下在加性高斯白噪声信道传输的误比特率与信噪比之间的对应关系。运行文中程序可以直接得到不同信噪比下的理论误比特率，该数据可以通过与实际信道测试的信噪比进行比较，得到信道的恶化量。为测控通信设备遥测、数传信道误码性能的测试提供理论依据。The paper realizes the correspondence relation between BER （bit error rate） and SNR （ signal - to - noise ratio） for the no coding and convolution coding signal in various modulation modes over the AWGN （additive white Gaussian noise） channels based on Matlab. The theoretical BER in different SNRs can directly be ac- quired by running the procedure in this paper. The deterioration of the channel can be calculated by comparing the theoretical BER with the real channel tests of SNR. The paper provides a theoretical foundation for the TT＆C communication equipments telemetry and error performance tests of data transmission channel.

关 键 词：Matlab BPSK QPSK 卷积码 误比特率 

分 类 号：TN742.2[电子电信—电路与系统]