Digital frequency conversion technique in HDTV

Author

Ai, Bo ; Wang, Yannan ; Ge, J.H. ; Zhao, Y.N.

Author_Institution

Nat. key Lab. of Integrated Service Networks, Xidian Univ., Xi´an, China

fYear

2003

fDate

4-7 Nov. 2003

Firstpage

354

Lastpage

359

Abstract

The paper describes research on the fundamental principle of digital modulation and frequency conversion in broadband digital broadcasting-terrestrial TV ( BDB-T) system. Different from conventional down-conversion techniques, a new digital down-conversion model is proposed which utilizes the Hilbert transform. A method eliminating the A/D DC offset in this model is also proposed. The corresponding FPGA hardware is tested in an HDTV prototype and proves the efficiency and good performance of the model and the new method.

Keywords

Hilbert transforms; OFDM modulation; digital video broadcasting; field programmable gate arrays; frequency convertors; high definition television; A/D DC offset; DVB-T; FPGA hardware; HDTV; Hilbert transform; OFDM; broadband digital broadcasting; coded orthogonal frequency division multiplexing; digital frequency conversion; digital modulation; terrestrial TV; Clocks; Digital modulation; Digital video broadcasting; Field programmable gate arrays; Frequency conversion; HDTV; Hardware; OFDM modulation; Signal processing; TV;

fLanguage

English

Publisher

ieee

Conference_Titel

Environmental Electromagnetics, 2003. CEEM 2003. Proceedings. Asia-Pacific Conference on

Conference_Location

Hangzhou, China

Print_ISBN

7-5635-0802-3

Type

conf

DOI

10.1109/CEEM.2003.238134

Filename

1282344