摘要
提出将扫频算法与简化星座图算法(RC-DD)相结合应用于QAM载波恢复中。介绍了新算法的基本原理、载波恢复方法的结构。仿真结果显示,该方法性能可靠,捕获速度快,稳定度好,精度高且捕获频偏可达符号速率级,可以在较宽的范围内快速、准确地恢复载波。
The frequency weeping algorithm and decision-directed of reduced constellation （RC-DD） algorithm are together used in QAM carrier recovery. And then, the basic theory and structure of carrier recovery algorithm are introduced. The simulation resulsts show that the proposed method has reliable performance, quick capture speed, good stability and high precision, and the capture frequency offset can reach the level of symbolic rate.
出处
《电视技术》
北大核心
2008年第2期9-10,71,共3页
Video Engineering
基金
国家自然科学基金重点项目(60432040)
教育部新世纪优秀人才支持计划(NCET-05-0754)
