OFDM for broadcasting in presence of analogue co-channel interference

Author

Vahlin, Anders ; Holte, Nils

Author_Institution

Dept. of Telecommun., Norwegian Inst. of Technol., Trondheim, Norway

Volume

41

Issue

3

fYear

1995

fDate

9/1/1995 12:00:00 AM

Firstpage

89

Lastpage

93

Abstract

This paper treats the problems of digital TV terrestrial broadcasting in presence of co-channel interference from analogue TV services. The channel capacity is calculated for the optimum distribution of the transmitted power. An OFDM scheme is presented which is designed to be robust to the analogue TV interference. Power and number of bits per symbol are assigned to each OFDM channel to give the maximum data rate for a given signal to interference ratio. Simulations of the proposed scheme, for 8 MHz bandwidth and interference from a system G PAL signal, show that acceptable error rate can be achieved for e.g. 27 Mbit/s and 39 Mbit/s at signal to interference ratios of -6 dB and 0 dB, respectively. The proposed scheme is suitable for the next generation terrestrial TV networks which are going to coexist with the current analogue systems

Keywords

channel capacity; cochannel interference; digital communication; digital television; frequency division multiplexing; television broadcasting; television interference; television networks; video signals; 27 Mbit/s; 39 Mbit/s; G PAL signal; OFDM; analogue TV interference; analogue TV services; analogue co-channel interference; bandwidth; channel capacity; digital TV terrestrial broadcasting; error rate; maximum data rate; optimum distribution; signal to interference ratios; simulations; terrestrial TV networks; transmitted power; Bit rate; Channel capacity; Digital TV; Error analysis; Interchannel interference; Next generation networking; OFDM; Robustness; TV broadcasting; TV interference;

fLanguage

English

Journal_Title

Broadcasting, IEEE Transactions on

Publisher

ieee

ISSN

0018-9316

Type

jour

DOI

10.1109/11.466093

Filename

466093