| Presentation | 2003/10/10 A Sutudy on a JPEG2000 Image Transmission System over DS-CDMA Environment. Yoshitaka INDUE, Yoshinobu KAJIKAWA, Yasuo NOMURA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a transmission system for the JPEG2000 parti in mobile communications. In the JPEG2000 encoding, an input image is coded in order of significant sub-bands which are lower frequency bands. The proposed transmission system therefore assigns each sub-band data weights according to the significance by using the orthogonal multi-code CDMA so that bit errors are concentrated in higher frequency sub-bands which are little significant on image reconstruction. Concretely, significant sub-band data is copied plurally and the copied data is orthogonal multiplexed. The multiplexed data is averaged in the receiver so that the bit errors of the significant sub-bands are reduced. On the other hand, the other sub-band data is not copied in order to realize the high transmission rate. Furthermore, data other than an image is transmitted with high quality by orthogonal multiplexing. Simulation results demonstrate that the proposed system can improve image quality compared with the conventional transmission system under the same BER. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | JPEG2000part1 / Sub-band / Orthogonal multi-code CDMA |
| Paper # | RCS2003-139 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2003/10/10(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Sutudy on a JPEG2000 Image Transmission System over DS-CDMA Environment. |
| Sub Title (in English) | |
| Keyword(1) | JPEG2000part1 |
| Keyword(2) | Sub-band |
| Keyword(3) | Orthogonal multi-code CDMA |
| 1st Author's Name | Yoshitaka INDUE |
| 1st Author's Affiliation | Department of Electronics, Faculty of Engineering, Kansai University() |
| 2nd Author's Name | Yoshinobu KAJIKAWA |
| 2nd Author's Affiliation | Department of Electronics, Faculty of Engineering, Kansai University |
| 3rd Author's Name | Yasuo NOMURA |
| 3rd Author's Affiliation | Department of Electronics, Faculty of Engineering, Kansai University |
| Date | 2003/10/10 |
| Paper # | RCS2003-139 |
| Volume (vol) | vol.103 |
| Number (no) | 363 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |