| Presentation | 1995/7/22 Time Coordinate Permutations for Geometrically Uniform PSK-type Trellis Codes Yassuo Oscar Takeshita, Hideki Imai, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The investigation of trellis codes using group theory are likely to be a good approach. Distance properties and internal structure becomes more visible. In this paper we show that time coordinate permutation is an important symmetry to be considered for subconstellations of L×MPSK ; it will allow the existence of smaller normal subgroups with binary factor groups compared with the best known GU partitions. With this observation, we will be able to increase by 3db the achievable upper bounds on the asymptotic coding gains of some GU trellis codes. Indeed, we have found some better trellis codes than previously found ones. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Geometrically Uniform Codes / Group Codes / Coded Modulation / Trellis Codes |
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| Conference Information | |
| Committee | IT |
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| Conference Date | 1995/7/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Information Theory (IT) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Time Coordinate Permutations for Geometrically Uniform PSK-type Trellis Codes |
| Sub Title (in English) | |
| Keyword(1) | Geometrically Uniform Codes |
| Keyword(2) | Group Codes |
| Keyword(3) | Coded Modulation |
| Keyword(4) | Trellis Codes |
| 1st Author's Name | Yassuo Oscar Takeshita |
| 1st Author's Affiliation | 3rd Department, Institute of Industrial Science THE UNIVERSITY OF TOKYO() |
| 2nd Author's Name | Hideki Imai |
| 2nd Author's Affiliation | 3rd Department, Institute of Industrial Science THE UNIVERSITY OF TOKYO |
| Date | 1995/7/22 |
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| Volume (vol) | vol.95 |
| Number (no) | 175 |
| Page | pp.pp.- |
| #Pages | 5 |
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