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本文提出了宽带数字电视地面广播(BDB-T)系统的同步及信道估计与均衡方案,在此基础上研究分析 了公共相位误差(CPE)对系统性能的影响,给出从同步和均衡两个方面对CPE进行校正的方法;设计出基于FPGA 的CPE校正电路。通过BDB-T功能样机的现场测试,表明了校正方法的正确性及其电路的可靠性。
In this paper, the synchronization and channel estimation and equalization scheme of the broadband digital terrestrial television broadcasting (BDB-T) system are proposed. Based on this, the influence of the common phase error (CPE) on the system performance is analyzed and analyzed. CPE correction method; designed FPGA-based CPE correction circuit. Through the field test of the BDB-T functional prototype, the correctness of the calibration method and the reliability of the circuit are demonstrated.