A hardware efficient phase/gain tracking loop for the Grand Alliance VSB HDTV receiver

Author

Lee, Wonho ; Cheun, Kyungwhoon ; Choi, Seokrim

Author_Institution

Dept. of Electron. & Electr. Eng., Pohang Inst. of Sci. & Technol., South Korea

Volume

42

Issue

3

fYear

1996

fDate

8/1/1996 12:00:00 AM

Firstpage

632

Lastpage

639

Abstract

The Grand Alliance VSB HDTV system is a terrestrial HDTV broadcasting standard for the USA. We propose a hardware efficient algorithm for the phase/gain tracking loop block which tracks out the residual phase noise and slowly varying gain error at the output of the channel equalizer. In the proposed algorithm, the phase error is calculated using a modified decision directed (DD) method where a stop-and-go type flag is used to allow the update of the de-rotation phase only when the sign of the DD phase error is considered to be reliable. Computer simulations are performed and the satisfactory performance of the phase/gain tracking loop is verified

Keywords

decision theory; equalisers; high definition television; phase locked loops; phase noise; telecommunication standards; television broadcasting; television receivers; television standards; Grand Alliance VSB HDTV receiver; HDTV system; PLL; USA; channel equalizer output; computer simulations; derotation phase; hardware efficient algorithm; modified decision directed method; performance; phase error; phase/gain tracking loop; residual phase noise; slowly varying gain error; stop and go type flag; terrestrial HDTV broadcasting standard; Broadcasting; Computer errors; Computer simulation; Equalizers; Error correction; HDTV; Hardware; Performance gain; Phase noise; Tracking loops;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.536166

Filename

536166