The University of Southampton
University of Southampton Institutional Repository

A Mobile Speech, Video and Data Transceiver Scheme

A Mobile Speech, Video and Data Transceiver Scheme
A Mobile Speech, Video and Data Transceiver Scheme
The complexity, robustness, image and speech quality as well as packet multiplexing issues of a re-configurable multi-media mobile communicator are addressed. The proposed moderate complexity motion-compensated Discrete Cosine Transform (DCT) based image communicator provides an image peak signal-to-noise ratio (PSNR) of 38 dB at an average bit rate of about 25 kbits/s. The speech codec used is a low-complexity 32 kbit/s CCITT G721 standard scheme. Bandwidth efficient 16 or 64 level quadrature amplitude modulation (QAM) combined with embedded low-complexity binary Bose-Chaudhuri-Hocquenghem (BCH) forward error correction (FEC) coding is deployed. The 20-slot packet reservation multiple access (PRMA) scheme used supports an extra 2.4 kbit/s low-rate data channel for each speech user in addition to providing 5-6 videophone channels. The ADPCM/DCT/BCH/16-QAM and ADPCM/DCT/BCH/64-QAM schemes provide nearly unimpaired speech and image quality for channel SNRs in excess of 30 dB and 38 dB, respectively.
452-456
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Stedman, R.
b9d5c92c-5129-4376-8d78-36f63a3c2e90
Steele, R.
7b1e6d15-a296-43bc-8ff2-37fbeb71b0ae
Cheung, J.C.S.
2757d39e-5686-4e67-927b-39774cd56147
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Stedman, R.
b9d5c92c-5129-4376-8d78-36f63a3c2e90
Steele, R.
7b1e6d15-a296-43bc-8ff2-37fbeb71b0ae
Cheung, J.C.S.
2757d39e-5686-4e67-927b-39774cd56147

Hanzo, L., Stedman, R., Steele, R. and Cheung, J.C.S. (1994) A Mobile Speech, Video and Data Transceiver Scheme. of VTC'94, Sweden. 07 - 11 Jun 1994. pp. 452-456 .

Record type: Conference or Workshop Item (Other)

Abstract

The complexity, robustness, image and speech quality as well as packet multiplexing issues of a re-configurable multi-media mobile communicator are addressed. The proposed moderate complexity motion-compensated Discrete Cosine Transform (DCT) based image communicator provides an image peak signal-to-noise ratio (PSNR) of 38 dB at an average bit rate of about 25 kbits/s. The speech codec used is a low-complexity 32 kbit/s CCITT G721 standard scheme. Bandwidth efficient 16 or 64 level quadrature amplitude modulation (QAM) combined with embedded low-complexity binary Bose-Chaudhuri-Hocquenghem (BCH) forward error correction (FEC) coding is deployed. The 20-slot packet reservation multiple access (PRMA) scheme used supports an extra 2.4 kbit/s low-rate data channel for each speech user in addition to providing 5-6 videophone channels. The ADPCM/DCT/BCH/16-QAM and ADPCM/DCT/BCH/64-QAM schemes provide nearly unimpaired speech and image quality for channel SNRs in excess of 30 dB and 38 dB, respectively.

PDF
lh-rs-rs-jcsc-vtc-1994.pdf - Other
Download (421kB)

More information

Published date: June 1994
Additional Information: Event Dates: 7-11 June 1994 Address: Stockholm , Sweeden
Venue - Dates: of VTC'94, Sweden, 1994-06-07 - 1994-06-11
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 257163
URI: https://eprints.soton.ac.uk/id/eprint/257163
PURE UUID: c6c3cfd3-5db7-4340-abb4-05919a6c43eb
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 17 Jan 2003
Last modified: 06 Jun 2018 13:14

Export record

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.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

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.

×