A Mobile Hi-Fi Digital Audio Broadcasting Scheme


Hanzo, L., Lin, X., Steele, R. and Webb, W.T. (1994) A Mobile Hi-Fi Digital Audio Broadcasting Scheme. of VTC'94, Stockholm, Sweden, 07 - 11 Jun 1994. , 1035-1039.

This is the latest version of this item.

Download

[img] PDF
Download (367Kb)

Description/Abstract

The audio quality, robustness and complexity issues of a novel mobile digital audio broadcast (DAB) scheme are addressed. The audio codec is based on a combination of subband coding (SBC) and multipulse excited linear predictive coding (MPLPC), where the bit allocation is dynamically adapted according to both the signal power in different subbands and a perceptual hearing model. Typically a segmental signal to noise ratio (SEGSNR) in excess of 30 dB associated with high fidelity (HI-FI) subjective quality was achieved for 2.67 bits/sample transmissions at a mono bit rate of 86 kbits/s. Four different source-matched forward error correction (FEC) schemes were investigated in order to explore the complexity, bit rate and robustness trade-offs. When using 4 bit/symbol 16-level star-constellation quadrature amplitude modulation (16-StQAM) the overall signalling rate became approximately 30 kBaud, accommodating two stereo DAB channels in a conventional 200 kHz, analogue FM channel's bandwidth. Our diversity assisted DAB scheme required a channel signal to noise ratio (SNR) of about 25 dB for unimpaired audio quality via the worst-case Rayleigh fading mobile channel, when the mobile speed was 30 mph and the propagation frequency was 1.5 GHz. In case of the stationary Gaussian scenario an SNR of about 20 dB was required.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Additional Information: Event Dates: 7-11 June 1994 Address: Stockholm , Sweeden
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Comms, Signal Processing & Control
ePrint ID: 257164
Date Deposited: 17 Jan 2003
Last Modified: 27 Mar 2014 19:59
Further Information:Google Scholar
ISI Citation Count:0
URI: http://eprints.soton.ac.uk/id/eprint/257164

Available Versions of this Item

  • A Mobile Hi-Fi Digital Audio Broadcasting Scheme. (deposited 17 Jan 2003) [Currently Displayed]

Actions (login required)

View Item View Item

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics