基于DSP算法的广播电视发射基站信号实时信道均衡系统设计  

Real-Time Channel Equalization System Design for Broadcast Television Transmission Stations Based on DSP Algorithms

作　　者：苏传春 修波 SU Chuanchun;XIU Bo(Qingdao Chengyang District Broadcasting and Television Center,Qingdao 266109,China)

机构地区：[1]青岛市城阳区广播电视中心,山东青岛266109

出　　处：《电声技术》2024年第10期182-184,共3页Audio Engineering

摘　　要：设计一种应用于广播电视发射基站的信号实时信道均衡系统,该系统基于数字信号处理(Digital Signal Processing,DSP)算法,旨在提高信号传输质量并降低误码率。系统由信号预处理、信道估计、自适应均衡3个关键模块组成。信号预处理模块采用自适应滤波技术去除噪声和干扰;信道估计模块利用频域分析技术精确估计信道参数;自适应均衡模块则通过最小均方误差(Least Mean Square,LMS)算法动态调整均衡器系数,以补偿信道失真。实验结果表明,该系统在城市、郊区、山区环境下均能显著提高信号质量,降低误码率,并提供足够的信道容量,满足广播电视信号的高质量实时传输需求。A real-time channel equalization system for broadcast television transmission stations is designed,which is based on Digital Signal Processing(DSP)algorithm,aiming at improving signal transmission quality and reducing bit error rate.The system consists of three key modules:signal preprocessing,channel estimation and adaptive equalization.The signal preprocessing module uses adaptive filtering technology to remove noise and interference;The channel estimation module uses frequency domain analysis technology to accurately estimate channel parameters;The adaptive equalization module dynamically adjusts the equalizer coefficients through the Least Mean Square(LMS)algorithm to compensate the channel distortion.The experimental results show that the system can significantly improve the signal quality and reduce the bit error rate in urban,suburban and mountainous environments,and provide sufficient channel capacity to meet the requirements of high-quality real-time transmission of radio and television signals.

关 键 词：数字信号处理(DSP)算法 信道均衡 自适应滤波 

分 类 号：TN948.53[电子电信—信号与信息处理]