搜索结果: 1-3 共查到“信息与通信工程 OQPSK”相关记录3条 . 查询时间(0.109 秒)
基于平方谱估计的OQPSK载波同步算法
OQPSK信号 载波同步 平方谱 COSTAS环
2011/5/20
基于COSTAS环的载波同步环路在对大频偏OQPSK信号进行载波同步时，所需的入锁时间较长，不能满足突发信号的处理要求。针对这一问题，该文将OQPSK信号的平方谱与载波同步环路相结合设计了改进算法。仿真结果显示，改进算法比传统算法的估计精度更高；在信噪比高于6 dB时，入锁时间短、误比特率接近理论限，满足大频偏突发信号的处理要求。
Wiener's Loop Filter for PLL-Based Carrier Recovery of OQPSK and MSK-Type Modulations
Wiener's Loop Filter PLL-Based Carrier Recovery OQPSK MSK-Type Modulations
2009/9/4
This letter considers carrier recovery for offset quadrature phase shift keying (OQPSK) and minimum shift keying-type (MSK-type) modulations based on phase-lock loop (PLL). The concern of the letter i...