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Programmable H.263-Based Wireless Video Tranceivers for Interference-Limited Environments

Programmable H.263-Based Wireless Video Tranceivers for Interference-Limited Environments
Programmable H.263-Based Wireless Video Tranceivers for Interference-Limited Environments
In order to exploit the non-uniformly distributed channel capacity over the cell area, the intelligent 7.3 kBaud programmable videophone transceiver of Table I is proposed, which is capable of exploiting the higher channel capacity of uninterfered, high channel-quality cell areas, while supporting more robust, but lower bitrate operation in more interfered areas. The system employed an enhanced H.263-compatible video codec. Since most existing wireless systems exhibit a constant bitrate, the video codec's bitrate fluctuation was smoothed by a novel adaptive packetisation algorithm, which is capable of supporting Automatic Repeat Request (ARQ) assisted operation in wireless distributive video transmissions, although in the proposed low-latency interactive videophone transceiver we refrained from using ARQ. Instead, corrupted packets are dropped by both the local and remote decoders, in order to prevent error propagation. The minimum required channel signal to interference-plus-noise ratio (SINR) was in the range of 8-28 dB for the various transmission scenarios of Table I, while the corresponding video peak signal-to-noise ratio (PSNR) was in the range of 32-39 dB. The main system features are summarised in Table I. Index Terms - H.263-based video communications, interactive wireless video, QAM-based video transmission, video communications in interference-limited environments, video tranceivers.
275-286
Cherriman, P.J.
1e7d352c-2e6e-4892-bb0b-4f4744d3dc63
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Cherriman, P.J.
1e7d352c-2e6e-4892-bb0b-4f4744d3dc63
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Cherriman, P.J. and Hanzo, L. (1998) Programmable H.263-Based Wireless Video Tranceivers for Interference-Limited Environments. IEEE Transactions on Circuits and Systems for Video Technology, 8 (3), 275-286.

Record type: Article

Abstract

In order to exploit the non-uniformly distributed channel capacity over the cell area, the intelligent 7.3 kBaud programmable videophone transceiver of Table I is proposed, which is capable of exploiting the higher channel capacity of uninterfered, high channel-quality cell areas, while supporting more robust, but lower bitrate operation in more interfered areas. The system employed an enhanced H.263-compatible video codec. Since most existing wireless systems exhibit a constant bitrate, the video codec's bitrate fluctuation was smoothed by a novel adaptive packetisation algorithm, which is capable of supporting Automatic Repeat Request (ARQ) assisted operation in wireless distributive video transmissions, although in the proposed low-latency interactive videophone transceiver we refrained from using ARQ. Instead, corrupted packets are dropped by both the local and remote decoders, in order to prevent error propagation. The minimum required channel signal to interference-plus-noise ratio (SINR) was in the range of 8-28 dB for the various transmission scenarios of Table I, while the corresponding video peak signal-to-noise ratio (PSNR) was in the range of 32-39 dB. The main system features are summarised in Table I. Index Terms - H.263-based video communications, interactive wireless video, QAM-based video transmission, video communications in interference-limited environments, video tranceivers.

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Published date: June 1998
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 258410
URI: http://eprints.soton.ac.uk/id/eprint/258410
PURE UUID: 78f69c5c-1ea6-4418-ab2c-075f15223e13
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 28 Oct 2003
Last modified: 23 Sep 2020 01:31

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