The University of Southampton
University of Southampton Institutional Repository

Transmission of Subband-Coded Images via Mobile Channels

Stedman, R, Gharavi, H, Hanzo, L and Steele, R (1993) Transmission of Subband-Coded Images via Mobile Channels IEEE Transactions on Circuits and Systems for Video Technology, 3, (1), pp. 15-26.

Record type: Article


Abstract - The feasibility of a mobile video handset is investigated via Rayleigh-fading channels, where transmissions must be confined to the channel's coherence bandwidth to avoid the deployment of complex high-power-consumption channel equalizers. This necessitates the utilization of a low-bit-rate image codec error protected by embedded low-complexity Bose-Chaudhuri-Hoequenghem (BCH) codecs and spectrally efficient 16-level quadrature amplitude modulation (16-QAM). Motion-compensated onuniform 7-band subband coding (SBC) with subband-specific scanning, adaptive quantization (Q), run-length coding (RLO, and adaptive buffering to equalize bit-rate fluctuations offer good objective and subjective image quality at moderate complexity and a bit rate of 55 kbit/s. Using a twin-class embedded-BCH error protection as well as pilot symbol and diversity-assisted 16-QAM, our 22-kBd candidate system yields unimpaired image quality for average channel signal-to-noise ratios (SNR) in excess of about 16-18 dB, when the mobile speed is 4 mi/h, an SNR value readily maintained in personal-communications mobile systems characterized by small cells.

PDF 3csvt01stedman.pdf - Other
Download (994kB)

More information

Published date: February 1993
Organisations: Southampton Wireless Group


Local EPrints ID: 251398
PURE UUID: d20c2f23-553c-4352-a36f-2d6882bf53ff

Catalogue record

Date deposited: 03 Apr 2001
Last modified: 18 Jul 2017 10:09

Export record


Author: R Stedman
Author: H Gharavi
Author: L Hanzo
Author: R Steele

University divisions

Download statistics

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

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.