【摘要】 阐述利用一种新的π 4 -DQPSK调制快速位定时捕获算法进行低速率数字移动突发通信 ,并利用TMSC5 4xDSP芯片实现该算法的关键技术。实验表明 ,该算法能够更加有效地克服多普勒频移并快速实现位定时捕获更多还原

【Abstract】 A new symbol timing rapid acquisition algorithm for π/4-DQPSK in low-rate digital mobile burst signal communication is elaborated.DSP-based implementation is also presented.Compared with traditional algorithms,the experimental results with new algorithm show that Doppler frequency offset can be avoided effectively and symbol timing rapid acquisition process can be completed rapidly.更多还原