一种用于DVB-C的全数字QAM解调器结构  

AN ARCHITECTURE OF AN ALL-DIGITIZED QAM RECEIVER APPLICABLE FOR DVB-C

作　　者：林银芳[1] 邓洋[1] 赵民建[1] 王匡[1] 

机构地区：[1]浙江大学信息学院,杭州310027

出　　处：《电子与信息学报》2003年第6期855-860,共6页Journal of Electronics & Information Technology

摘　　要：该文提出了一种适用于数字有线电视的全数字QAM解调器结构,对解调器的载波恢复、符号同步、自动增益控制和自适应均衡等进行研究分析,通过仿真给出了相应的参数,最后给出整个解调器在AWGN信道条件下的误码性能,从仿具结果可以看出,该文提出的解调器具有较好的性能,且易于全数字实现。An architecture of an all-digitized QAM receiver applicable for digital video broadcasting for cable television is proposed in this paper. The digital implementation of the QAM demodulator, including carrier recovery, symbol synchronization, automatic gain control and adaptive equalization is discussed. Loop parameters of the receiver are investigated via simulation. Finally, bit error rate of the receiver under AWGN channel is shown. Simulation results demonstrate that the receiver has a good performance, and is easy to implement digitally.

关 键 词：DVB—C QAM 全数字解调器 有线电视 载波恢复 符号同步 自动增益控制 自适应均衡 正交幅度调制 

分 类 号：TN763[电子电信—电路与系统]