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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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 > Southampton Wireless Group
|Date Deposited:||17 Jan 2003|
|Last Modified:||27 Mar 2014 19:59|
|Further Information:||Google Scholar|
|ISI Citation Count:||0|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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