为了适合恶劣信道环境,提出一种符合欧洲数字电视地面广播标准的正交频分复用同步系统.通过研究各种同步误差对接收数据的影响,充分利用系统中的冗余信息,提出估计精度更高,收敛速度更快的同步算法.理论分析和实验结果表明,提出的算法比传统算法性能更优越.可以适应恶劣环境的应用.
To adapt to the severe channel environments,an OFDM synchronization system for DVB-T is presented.By researching the effects of synchronization offsets and using all the redundant information,some algorithms with high accuracy and fast convergency speed are proposed.The theoretical analyses and simulations demonstrate that the proposed algorithms have better performances than conventional methods and can adapt to the severe environments well.