Wireless video broadcast to fixed and mobile receivers
Wireless video broadcast to fixed and mobile receivers
In this thesis, we explored the feasibility of providing broadcast video services to fixed and mobile users. The video codec used in our study was either the MPEG-2 or the MPEG-4 video codec. The MPEG-2 video bitstream was subjected to a rigorous bit error sensitivity investigation, in order to assist in contriving various error protection schemes for wireless broadcast video transmission. Turbo-coded performance enhancement of the terrestrial Digital Video Broadcast (DVB) system was proposed for transmission over mobile channels to receivers on the move. The turbo codec was shown to provide substantial performance advantages over conventional convolutional coding both in terms of bit error rate and video quality. We have also proposed similar enhancements for the satellite-based DVB system.
In order to increase the resilience of the video codec, we have investigated data partitioning in conjunction with multi-class source sensitivity matched error correlation coding. However, our experiments suggest that multi-class data partitioning did not result in error resilience improvements, since a high proportion of relatively sensitive video bits had to be relegated to the lower integrity subchannel, when invoking a powerful low-rate channel codec in the high-integrity protection class. Nonetheless, terrestrial DVB transmission to mobile receivers is feasible, when using turbo-coded OFDM transceivers at realistic power-budget requirements under the investigated highly dispersive fading channel conditions.
We then introduced coded modulation schemes, namely Trellis Coded Modulation (TCM), Turbo Trellis Coded Modulation (TTCM), Bit-Interleaved Coded Modulation (BICM) and Iterative Decoded Bit-Interleaved Coded Modulation (BICM-ID). The associated coded modulation schemes provided performance improvements in terms of spectral efficiency and decoding complexity.
University of Southampton
Lee, Chee Siong
41ce85a3-0422-4558-9f90-f9b4e4d360ef
2001
Lee, Chee Siong
41ce85a3-0422-4558-9f90-f9b4e4d360ef
Lee, Chee Siong
(2001)
Wireless video broadcast to fixed and mobile receivers.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
In this thesis, we explored the feasibility of providing broadcast video services to fixed and mobile users. The video codec used in our study was either the MPEG-2 or the MPEG-4 video codec. The MPEG-2 video bitstream was subjected to a rigorous bit error sensitivity investigation, in order to assist in contriving various error protection schemes for wireless broadcast video transmission. Turbo-coded performance enhancement of the terrestrial Digital Video Broadcast (DVB) system was proposed for transmission over mobile channels to receivers on the move. The turbo codec was shown to provide substantial performance advantages over conventional convolutional coding both in terms of bit error rate and video quality. We have also proposed similar enhancements for the satellite-based DVB system.
In order to increase the resilience of the video codec, we have investigated data partitioning in conjunction with multi-class source sensitivity matched error correlation coding. However, our experiments suggest that multi-class data partitioning did not result in error resilience improvements, since a high proportion of relatively sensitive video bits had to be relegated to the lower integrity subchannel, when invoking a powerful low-rate channel codec in the high-integrity protection class. Nonetheless, terrestrial DVB transmission to mobile receivers is feasible, when using turbo-coded OFDM transceivers at realistic power-budget requirements under the investigated highly dispersive fading channel conditions.
We then introduced coded modulation schemes, namely Trellis Coded Modulation (TCM), Turbo Trellis Coded Modulation (TTCM), Bit-Interleaved Coded Modulation (BICM) and Iterative Decoded Bit-Interleaved Coded Modulation (BICM-ID). The associated coded modulation schemes provided performance improvements in terms of spectral efficiency and decoding complexity.
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Published date: 2001
Identifiers
Local EPrints ID: 464360
URI: http://eprints.soton.ac.uk/id/eprint/464360
PURE UUID: 4a4eaa6d-22c3-4acb-bfa6-a747aa871ef0
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Date deposited: 04 Jul 2022 22:20
Last modified: 16 Mar 2024 19:27
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Author:
Chee Siong Lee
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