Title :
Digital frequency conversion technique in HDTV
Author :
Bo, Ai ; Hua, Ge Jian ; Yong, Wang ; Gang, Liu ; Pei, Liu
Author_Institution :
Nat. Key Lab. of Integrated Service Networks, Xidian Univ., Xi´´an, China
Abstract :
This paper makes a research on the fundamental principle of digital modulation and frequency conversion in broad band digital broadcasting terrestrial TV ( BDB-T) system. Different from conventional down-conversion technique, this paper proposes a new digital down-conversion model utilizing Hilbert transform and a method eliminating the A/D DC offset in this model is also proposed. The correspondent FPGA hardware though testing process in HDTV prototype 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; high definition television; A/D DC offset elimination; FPGA hardware; HDTV; Hilbert transform; broad band digital broadcasting terrestrial TV system; digital down conversion model; digital frequency conversion; digital modulation; down conversion technique; field programmable gate arrays; high definition television; Bandwidth; Clocks; Digital modulation; Field programmable gate arrays; Frequency conversion; HDTV; Hardware; OFDM modulation; Signal sampling; TV;
Conference_Titel :
Neural Networks and Signal Processing, 2003. Proceedings of the 2003 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
0-7803-7702-8
DOI :
10.1109/ICNNSP.2003.1281096
