Title :
Robust modem and coding techniques for FM hybrid ICOC DAB
Author :
Kroeger, Brian ; Cammarata, Denise
Author_Institution :
Westinghouse Wireless Solutions Co., Linthicum, MD, USA
fDate :
12/1/1997 12:00:00 AM
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;
Journal_Title :
Broadcasting, IEEE Transactions on
