Title :
An ultra-fast carrier recovery versus traditional synchronizers
Author :
Do, Gary L. ; Feher, Kamilo
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Davis, CA, USA
fDate :
3/1/1996 12:00:00 AM
Abstract :
A new ultra fast carrier recovery (CR) method based on adaptive phase tracking (APT) and frequency control (FC) is disclosed for a large class of digitally modulated system. The new digital signal processing (DSP) based methodology is demonstrated by hardware experiment for coherent demodulation. In addition, our comparative study with more conventional synchronization techniques indicate that the synchronization speed of our APT is reduced from the present state of the art (20 bits) to 4 bits. The tremendous synchronization advantage combined with robust error rate performance leads to increased spectral efficiency, power efficiency and larger capacity
Keywords :
adaptive signal processing; demodulation; frequency control; frequency division multiple access; frequency hop communication; modulation; pseudonoise codes; spread spectrum communication; synchronisation; tracking; Costas loop; DS-SS synchronisation; FDMA; adaptive phase tracking; coherent demodulation; digital signal processing; digitally modulated system; frequency control; frequency hopped system; hardware experiment; power efficiency; robust error rate performance; spectral efficiency; synchronization speed; ultra-fast carrier recovery; Adaptive control; Chromium; Demodulation; Digital modulation; Digital signal processing; Frequency control; Frequency synchronization; Hardware; Phase modulation; Programmable control;
Journal_Title :
Broadcasting, IEEE Transactions on
