一种改进的DVB-S2系统DAGC算法  

Improved DAGC Algorithm for DVB-S2 System

作　　者：陈舟[1] 张玉龙[1] 曹嘉麟[1] 吴川[1] 曾晓洋[1] 

机构地区：[1]复旦大学专用集成电路与系统国家重点实验室,上海201203

出　　处：《计算机工程》2011年第2期245-247,共3页Computer Engineering

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。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.

关 键 词：DVB-S2系统 数字自动增益控制 无导频模式 

分 类 号：TP312[自动化与计算机技术—计算机软件与理论]