Improving Costas loop pull in range using pseudo BER detector

Author

Peric, Miroslav ; Manojlovic, Predrag ; Peric, Dragana

Author_Institution

Inst. of Microwave Techniques & Electron., Novi Beograd, Serbia

Volume

2

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

753

Abstract

This paper describes a method for improving pull in range for the four-phase version of a Costas loop. The basic idea is that a pseudo bit error ratio (PBER) detector is used for fast detection of loop synchronization loss, and to trigger the frequency-sweeping circuitry. After synchronization is achieved the PBER detector detects the small BER and switches off the sweeping circuitry. Several types of PBER detector are considered and experimentally tested. One version is implemented in IMTEL´s (Institute for Microwave Techniques and Electronics) digital radio relay systems (DRRS) RRU13A and RRU23A

Keywords

digital phase locked loops; digital radio; error statistics; radio receivers; synchronisation; Costas loop pull in range; RRU13A; RRU23A; digital radio relay systems; four-phase version; frequency-sweeping circuitry; pseudo BER detector; pseudo bit error ratio detector; synchronization loss; Bit error rate; Circuit testing; Detectors; Digital communication; Digital relays; Frequency synchronization; Microwave theory and techniques; Radiofrequency integrated circuits; Switches; Switching circuits;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications in Modern Satellite, Cable and Broadcasting Service, 2001. TELSIKS 2001. 5th International Conference on

Conference_Location

Nis

Print_ISBN

0-7803-7228-X

Type

conf

DOI

10.1109/TELSKS.2001.955880

Filename

955880