【摘要】 抗干扰性能是测试一个广播与通信系统的重要指针。本文利用SIMULINK工具软件,来仿真2K模式的DVB-T系统。在信道模块中加入单频正弦波干扰,通过改变通道的信噪比SNR,单频正弦波的干扰频率,得到不同的系统的误比特率BER和信干比S/I的仿真曲线。通过对仿真结果的分析,得到对提高系统的抗干扰能力有益的结论。更多还原

【Abstract】 In this thesis, the system DVB-T in 2K mode is simulated by using the software tools of MATLAB/SIMULINK. A monochromatic interferer is added in the block of gauss channel. Different results in bit error rate (BER) can be achieved by changing the signal noise rate (SNR) of the channel and changing the frequency of the monochromatic interferer By analyzing the figure of bit error rate (BER) and signal interferer ratio(S/I), we can draw a conclusion for system how to improve the performance of protection from monochromatic interferer.更多还原