摘要： 提出一种应用于DVB-S2系统的数字自动增益控制(DAGC)算法，通过调整接收符号的幅度使其收敛于参考星座点从而获得良好的解调性能。与传统算法相比，该算法能较好地工作在系统所要求的信噪比条件下，可同时支持含导频模式和无导频模式，硬件实现复杂度低。
关键词:
DVB-S2系统,
数字自动增益控制,
无导频模式
Abstract: In order to make level of the incoming symbols approach the reference constellations, an improved Digital Automatic Gain Control (DAGC) algorithm for DVB-S2 system is proposed to enable better demodulator performance. Compared with traditional algorithm, it possesses many advantages, such as supporting much low signal-to-noise ratio and compatible of both with pilot and without pilot modes as well as much lower complexity.
Key words:
DVB-S2 system,
Digital Automatic Gain Control(DAGC),
no pilot mode
中图分类号:
陈舟, 张玉龙, 曹嘉麟, 吴川, 曾晓洋. 一种改进的DVB-S2系统DAGC算法[J]. 计算机工程, 2011, 37(2): 245-247.
CHEN Zhou, ZHANG Yu-Long, CAO Jia-Lin, TUN Chuan, CENG Xiao-Xiang. Improved DAGC Algorithm for DVB-S2 System[J]. Computer Engineering, 2011, 37(2): 245-247.