AI SearchUnequal error protection for MPEG-2 video transmission over frequency selective Rayleigh fading channels (Record no. 124342)
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| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260819085529.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 230300s1999 th u m rtt 0| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b11782791 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.TC-99-4 |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Tran Anh Tuan |
| 245 10 - TITLE STATEMENT | |
| Title | Unequal error protection for MPEG-2 video transmission over frequency selective Rayleigh fading channels |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1999 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 81 p. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. TC-99-4 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering. School of Advanced Technologies |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Eng.) - Asian Institute of Technology, 1999 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | MPEG-2 video communication over wireless challilels has been rece1vmg a lot of attention recently. MPEG-2 video is, however, extremely sensitive, due to the compression techniques it employs, to transmission errors. One single bit error may dramatically degrade the quality of the reconstructed video. Forward error correction (FEC) may be used to protect the transmitted video sequence. The sensitivity of different bits in the sequence, to transmission errors, however, varies from bit to bit. Unequal error protection (UEP) is therefore more beneficial than equal error protection (EEP). Furthermore, frequency-selective wireless challilels exhibit different fading levels over a period. The error correction assignments should also vary adaptively with the transmission conditions. In this thesis, the effects of bit errors at different positions in the video sequence were investigated. Results of the investigation show that the degree of importance of the bits in each slice varies from bit to bit. The bits at the begilliling of each slice are far more important than those bits at the far end of the slice. Therefore, the bits in each slice should be provided with different error control levels in order to improve video quality while minimizing the overhead due to FEC. A new UEP scheme was proposed, based on the above investigation results, which can improve the video quality of MPEG-2 video, transmitted over frequency selective RC1 yleigh fading challilels, without bandwidth expansion. In this scheme, not only header and control info1mation is provided with higher error control level, but also the video data in each slice is unequally protected. Here, an MPEG-2 video sequence is first split into different layers according to their importance. In each layer, the header and control information is separated and protected by higher error protection level. The video data in each slice is also unequally protected according to the position of the data in the slice. Rate-compatible punctur ~d convolutional codes, obtained by puncturing a (3,1,6) convolutional code, are used to provide UEP for the video sequence. The simulation results (using different video sequences) show remarkable improvement in both objective (up to 4 dB improvement in peak signal to noise ratio was observed) and subjective video quality compared to the video quality that was transmitted under the EEP scheme. Furthermore, the proposed scheme yields the same, or even slightly less, amount of overhead, due to FEC, compared to the EEP scheme. It was further noted that if the challilel state information is available at the transmitter, different error correction assignments could be applied adaptively with the challilel state information, which may give better results. It can, based on the above results, be concluded that the proposed scheme is a robust scheme to transmit MPEG-2 video over wireless challilels under a bandwidth constraint. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Digital communications |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Rajatheva, R.M.A.P, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Ahmed, Kazi Mohiuddin, |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Teerapat Sanguankotchakorn, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Nokia Telecommunications, |
| Relator term | Scholarship donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. TC-99-4 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B12250">http://203.159.5.9/ait-thesis/detail.php?q=B12250</a> |
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| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
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| Cataloger's initials, CIN (RLIN) | 000323 |
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| Koha item type | 22-AIT Thesis (Replacement) |
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| Koha item type | 40-Archives |
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| Koha item type | 20-AIT Publication |
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| CREATED | CREATED : 2014-04-28 |
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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 19/08/2026 | 50.00 | AIT Thesis no.TC-99-4 | 30050120808646 | 19/08/2026 | 3 | 19/08/2026 | 22-AIT Thesis (Replacement) | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 19/08/2026 | AIT Thesis no.TC-99-4 | 30050160045521 | 19/08/2026 | 19/08/2026 | 40-Archives | ||||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 19/08/2026 | 50.00 | AIT Thesis no.TC-99-4 | 30050211017701 | 19/08/2026 | 1 | 19/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 19/08/2026 | 50.00 | AIT Thesis no.TC-99-4 | 30050211017693 | 19/08/2026 | 2 | 19/08/2026 | 20-AIT Publication |