Robust modem and coding techniques for FM hybrid ICOC DAB

Author

Kroeger, Brian ; Cammarata, Denise

Author_Institution

Westinghouse Wireless Solutions Co., Linthicum, MD, USA

Volume

43

Issue

4

fYear

1997

fDate

12/1/1997 12:00:00 AM

Firstpage

412

Lastpage

420

Abstract

The design of robust modem and FEC (forward error correction) code techniques with application to the transmission of an FM hybrid analog/digital in-band on-channel (IBOC) digital audio broadcast (DAB) signal is presented here. The FEC codes are derived from an original lower rate convolutional code (R=1/3). The original code is segmented into a pair of “complementary” components, which form independent codes, each with a higher rate (less redundancy) than the base code. The exploitation of channel state information (CSI) and special interleaving techniques are described for application to FM hybrid IBOC DAB with its unique interference environment and selective fading due to multipath. Simulation results confirm the robustness of the design

Keywords

convolutional codes; digital audio broadcasting; error correction codes; fading; forward error correction; frequency division multiplexing; frequency modulation; interleaved codes; modems; multipath channels; radiofrequency interference; FEC code techniques; FM hybrid ICOC DAB; FM hybrid analog/digital in-band on-channel DAB signal; base code; channel state information; coding techniques; complementary components; convolutional code; design; digital audio broadcast; forward error correction; interference environment; interleaving techniques; multipath; redundancy; robust modem; selective fading; simulation; transmission; Channel state information; Convolutional codes; Digital audio broadcasting; Forward error correction; Interference; Interleaved codes; Modems; Redundancy; Robustness; Signal design;

fLanguage

English

Journal_Title

Broadcasting, IEEE Transactions on

Publisher

ieee

ISSN

0018-9316

Type

jour

DOI

10.1109/11.664024

Filename

664024