基于遗传算法的地面数字电视单频网覆盖率优化方法  

Optimization Method of Terrestrial Digital TV Based on Genetic Algorithm

作　　者：陈泽华 CHEN Zehua(Ninghai Media Group,Ninghai 315600,China)

机构地区：[1]宁海传媒集团,浙江宁海315600

出　　处：《中国有线电视》2022年第3期5-8,共4页China Digital Cable TV

摘　　要：针对现有地面数字电视单频网接收电平过低、调制误差率大等现象,严重影响单频网覆盖率及覆盖效果,造成地面数字电视接收性能差,在引入遗传算法的基础上,开展对其优化方法的设计研究。通过基于遗传算法的单频网台站位置优化、地面数字电视单频网SIP信号处理优化、单频网发射功率及其它参数优化调整等,提出一种全新的优化方法。通过对比优化前后单频网的覆盖效果,进一步证明新的优化方法可行,将其应用于实际可有效提高接收电平,降低调制误差率,从而提高单频网覆盖率,达到更理想的覆盖和接收效果。According to the existing problems of low reception level and large modulation error rate of the single frequency network,which seriously affect the coverage rate and coverage performance of the single frequency network of the ground digital TV.A new optimization method is proposed based on the genetic algorithm,SIP signal processing optimization,optimization and adjustment of transmission power and other parameters.By comparing the coverage effect of the single frequency network before and after the optimization,the new optimization method is feasible and it can effectively improve the reception level,reduce the modulation error rate,and achieve a more ideal coverage and receiving effect.

关 键 词：遗传算法 覆盖率 单频网 

分 类 号：TN949.197[电子电信—信号与信息处理]