AWGN信道中BPSK误码率仿真分析  

Simulation Analysis of BPSK Bit Error Rate in AWGN Channel

作　　者：丁凯 DING Kai(No.92785 Troops of Navy,Suizhong Liaoning 125208,China)

机构地区：[1]海军92785部队,辽宁绥中125208

出　　处：《微处理机》2021年第3期23-26,共4页Microprocessors

摘　　要：针对加性高斯白噪声使数据出现差错对数字通信系统中信号接受端带来的负面效应,对加性高斯白噪声对信道中误码率性能的影响展开研究。通过介绍BPSK的扩频调制解调原理及信号调制解调过程,给出AWGN信道中BPSK调制的理论BER性能;基于Simulink环境构建BPSK在高斯白噪声信道中传输的系统模型,计算出BPSK调制解调的误码率,并与理论值进行比较。通过仿真实验,揭示系统误码率与信道质量的关系并验证系统可靠性。实验表明,系统满足设计要求且易于实现。In view of the data error caused by additive white Gaussian noise,which has a negative impact on the signal receiver in digital communication system,the influence of additive white Gaussian noise on the bit error rate performance in the channel is studied.By introducing the spread spectrum modulation and demodulation principle and signal modulation and demodulation process of BPSK,the theoretical BER performance of BPSK modulation in AWGN channel is given.A system model of BPSK transmission in white Gaussian noise channel is constructed based on Simulink environment,and the bit error rate of BPSK modulation and demodulation is calculated and compared with the theoretical value.The relationship between system bit error rate and channel quality is revealed through simulation experiments,and the reliability of the system is verified.Experiments show that the system meets the design requirements and is easy to implement.

关 键 词：加性高斯白噪声 误码率 二进制相移键控 仿真 

分 类 号：TN911.4[电子电信—通信与信息系统] TN76[电子电信—信息与通信工程]