Burst-by-Burst Adaptive Joint-Detection CDMA/H2.63 Based Video Telephony
Burst-by-Burst Adaptive Joint-Detection CDMA/H2.63 Based Video Telephony
Since wireless channels exhibit dramatic near-instantaneous channel-quality fluctuations, it is unrealistic to expect that a transceiver relying on time-invariant modulation and coding modes is capable of delivering as good a performance as a near-instantaneously adaptive arrangement. Hence, a near-instantaneously adaptive joint-detection code division multiple access (CDMA)-based video transceiver is proposed for wireless video telephony. Specifically, the transceiver is capable of reconfiguring itself in 1, 2, and 4 bits/symbol direct-sequence CDMA modes and delivers an unimpaired video quality associated with a peak signal-to-noise ratio (PSNR) of 34–41 dB for channel SNRs in excess of about 5 dB over the COST207 bad urban channel model at video rates between 5–26.9 kbits/s using 176 144 pixel quarter common intermediate format (QCIF) and 128 96 pixel sub-QCIF (SQCIF) video formats. Index Terms—CDMA, H.263, reconfigurable modulation, video telephony, wireless video.
342-348
Cherriman, P.J.
1e7d352c-2e6e-4892-bb0b-4f4744d3dc63
Kuan, E.L.
67ebe8dd-706a-4c9f-ba00-f38ff3da627f
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
May 2002
Cherriman, P.J.
1e7d352c-2e6e-4892-bb0b-4f4744d3dc63
Kuan, E.L.
67ebe8dd-706a-4c9f-ba00-f38ff3da627f
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Cherriman, P.J., Kuan, E.L. and Hanzo, L.
(2002)
Burst-by-Burst Adaptive Joint-Detection CDMA/H2.63 Based Video Telephony.
IEEE Transactions on Circuits & Systems for Video Technology, 12 (5), .
Abstract
Since wireless channels exhibit dramatic near-instantaneous channel-quality fluctuations, it is unrealistic to expect that a transceiver relying on time-invariant modulation and coding modes is capable of delivering as good a performance as a near-instantaneously adaptive arrangement. Hence, a near-instantaneously adaptive joint-detection code division multiple access (CDMA)-based video transceiver is proposed for wireless video telephony. Specifically, the transceiver is capable of reconfiguring itself in 1, 2, and 4 bits/symbol direct-sequence CDMA modes and delivers an unimpaired video quality associated with a peak signal-to-noise ratio (PSNR) of 34–41 dB for channel SNRs in excess of about 5 dB over the COST207 bad urban channel model at video rates between 5–26.9 kbits/s using 176 144 pixel quarter common intermediate format (QCIF) and 128 96 pixel sub-QCIF (SQCIF) video formats. Index Terms—CDMA, H.263, reconfigurable modulation, video telephony, wireless video.
Text
pjc-elk-lh-csvt-may-2002.pdf
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More information
Published date: May 2002
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 257015
URI: http://eprints.soton.ac.uk/id/eprint/257015
PURE UUID: e58dcfb1-c93e-4b26-b8fc-c955eb3055a2
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Date deposited: 03 Dec 2003
Last modified: 18 Mar 2024 02:33
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Contributors
Author:
P.J. Cherriman
Author:
E.L. Kuan
Author:
L. Hanzo
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