Title :
Digital ultrafast carrier recovery for interactive transmission systems
Author :
Brown, Chuck ; Do, Gary ; Feher, Kamilo
Author_Institution :
Digital Commun. Res. Lab., California Univ., Davis, CA, USA
Abstract :
An ultrafast, all-digital method for phase synchronization and coherent carrier recovery is proposed for time division multiple access (TDMA) and code division multiple access (CDMA) burst data communication systems. In interactive transmission systems using burst data communications, instantaneous phase acquisition is crucial to properly demodulate the data and reduce the amount of preamble overhead bits. The new adaptive phase tracking (APT) method proposed, uses a hard-limited IF signal in a feed forward configuration for carrier phase detection and recovery. It is shown experimentally that this method is quite robust with respect to acquisition time and bit error rate (BER) performance for a binary phase shift keyed (BPSK) signal. A low power, low cost single chip fast carrier synchronization and demodulation solution for QPSK, GMSK and GSM compatible OQPSK and Feher´s quadrature phase shift keyed (FQPSK) and binary phase shift keyed (FBPSK) systems are also presented
Keywords :
code division multiple access; data communication; demodulation; digital communication; error statistics; feedforward; interactive systems; minimum shift keying; quadrature phase shift keying; synchronisation; telecommunication switching; time division multiple access; CDMA; Feher binary phase shift keyed system; Feher quadrature phase shift keyed system; GMSK; GSM compatible OQPSK; QPSK; TDMA; adaptive phase tracking; binary phase shift keyed signal; bit error rate; burst data communication systems; carrier phase detection; carrier phase recovery; code division multiple access; coherent carrier recovery; data demodulation; digital ultrafast carrier recovery; feed forward configuration; hard limited IF signal; interactive transmission systems; phase synchronization; time division multiple access; Binary phase shift keying; Bit error rate; Costs; Data communication; Demodulation; Feeds; Multiaccess communication; Phase detection; Robustness; Time division multiple access;
Conference_Titel :
Consumer Electronics, 1995., Proceedings of International Conference on
Conference_Location :
Rosemont, IL
Print_ISBN :
0-7803-2140-5
DOI :
10.1109/ICCE.1995.517933
