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Constant-rate Turbo-coded and Block-coded Orthogonal Frequency Division Multiplex Videophony over UMTS

Constant-rate Turbo-coded and Block-coded Orthogonal Frequency Division Multiplex Videophony over UMTS
Constant-rate Turbo-coded and Block-coded Orthogonal Frequency Division Multiplex Videophony over UMTS
The ability of a Universal Mobile Telecommunications System (UMTS) framework [1] to support interactive video communications is evaluated employing the inherently error sensitive, but high-compression H.263 video codec. A Constant Bit Rate (CBR) is maintained and error-resilience is achieved by invoking a packet acknowledgement scheme, instructing both the local and remote reconstruction buffer to leave picture areas un-updated, if the packet was corrupted. Orthogonal Frequency Division Multiplexing (OFDM) [3] is employed to deliver the video signal over the dispersive worst-case Bad Urban COST 207 channel[14], assisted by binary Bose-Chaudhuri-Hochquenghem (BCH) [11] and turbo codes[12]. These channel codes are investigated comparatively, with the conclusion that due to the high error-resilience of the video packetisation and acknowledgement regime the increased power of the higher complexity turbo codec does not translate to substantially improved overall system robustness, although the bit error rate and acknowledgement flag error-rate is significantly reduced. The system is also compared to a 155Mbps wireless ATM scheme[9]. The video transceiver parameters are summarised in Table 1.
2848-2852
Cherriman, P.J.
1e7d352c-2e6e-4892-bb0b-4f4744d3dc63
Keller, T.
41cd2bbf-bf82-4aac-83e9-d585f67f9742
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Cherriman, P.J.
1e7d352c-2e6e-4892-bb0b-4f4744d3dc63
Keller, T.
41cd2bbf-bf82-4aac-83e9-d585f67f9742
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Cherriman, P.J., Keller, T. and Hanzo, L. (1998) Constant-rate Turbo-coded and Block-coded Orthogonal Frequency Division Multiplex Videophony over UMTS. Globecom'98, Sydney, Australia. 08 - 12 Nov 1998. pp. 2848-2852 .

Record type: Conference or Workshop Item (Paper)

Abstract

The ability of a Universal Mobile Telecommunications System (UMTS) framework [1] to support interactive video communications is evaluated employing the inherently error sensitive, but high-compression H.263 video codec. A Constant Bit Rate (CBR) is maintained and error-resilience is achieved by invoking a packet acknowledgement scheme, instructing both the local and remote reconstruction buffer to leave picture areas un-updated, if the packet was corrupted. Orthogonal Frequency Division Multiplexing (OFDM) [3] is employed to deliver the video signal over the dispersive worst-case Bad Urban COST 207 channel[14], assisted by binary Bose-Chaudhuri-Hochquenghem (BCH) [11] and turbo codes[12]. These channel codes are investigated comparatively, with the conclusion that due to the high error-resilience of the video packetisation and acknowledgement regime the increased power of the higher complexity turbo codec does not translate to substantially improved overall system robustness, although the bit error rate and acknowledgement flag error-rate is significantly reduced. The system is also compared to a 155Mbps wireless ATM scheme[9]. The video transceiver parameters are summarised in Table 1.

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More information

Published date: November 1998
Additional Information: Event Dates: 8-12 November 1998 Address: Sydney, Australia
Venue - Dates: Globecom'98, Sydney, Australia, 1998-11-08 - 1998-11-12
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 257071
URI: http://eprints.soton.ac.uk/id/eprint/257071
PURE UUID: c7c21cbd-f274-48e7-97e9-6b4c8caf9595
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 13 Feb 2004
Last modified: 23 Sep 2020 01:31

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