A Mobile Speech, Video and Data Transceiver Scheme
Hanzo, L., Stedman, R., Steele, R. and Cheung, J.C.S. (1994) A Mobile Speech, Video and Data Transceiver Scheme. of VTC'94, Stockholm, Sweden, 07 - 11 Jun 1994. , 452-456.
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Description/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.
| 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 |
| Item ID: | 257163 |
| Date Deposited: | 17 Jan 2003 |
| Last Modified: | 07 Aug 2012 23:33 |
| Contributors: | Hanzo, L. (Author) Stedman, R. (Author) Steele, R. (Author) Cheung, J.C.S. (Author) |
| Date: | June 1994 |
| Additional Information: | Event Dates: 7-11 June 1994 Address: Stockholm , Sweeden |
| Status: | Published |
| Further Information: | Google Scholar |
| ISI Citation Count: | 0 |
| URI: | http://eprints.soton.ac.uk/id/eprint/257163 |
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- A Mobile Speech, Video and Data Transceiver Scheme. (deposited 17 Jan 2003) [Currently Displayed]
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