| Presentation | 2003/10/10 Study on QR Decomposition-based Branch Metric Computation in Trellis-coded Spatial Multiplexing Transmission Toshiaki KOIKE, Hidekazu MURATA, Susumu YOSHIDA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Spatial multiplexing architectures, which simultaneously transmit co-channel signals by utilizing multiple transmitters, have potential to significantly increase spectral efficiency in rich-scattering wireless communications. In particular, coded transmission systems making use of well-suited trellis-coded modulations (TCMs) offer superior performance in various environments. At the receiver, space-time sequence equalizer employing vector Viterbi algorithm can adaptively equalize intersymbol interference (ISI) incurred in wideband transmission and jointly decode multiplexed TCM signals. In recent years, sphere-constrained maximum likelihood detection, so-called sphere decoding, has drawn lots of attentions for reducing the computational burden in multiple-input multiple-output (MIMO) transmission systems. This paper describes the vector Viterbi algorithm applying the sphere decoding, and evaluates effects of computational complexity reduction in branch metric computations. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Trellis-coded modulation / Spatial multiplexing / Multiple-input multiple-output (MIMO) / Interference canceller / Adaptive equalization / Maximum likelihood sequence estimation (MLSE) / Sphere decoding |
| Paper # | RCS2003-149 |
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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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| 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) | Study on QR Decomposition-based Branch Metric Computation in Trellis-coded Spatial Multiplexing Transmission |
| Sub Title (in English) | |
| Keyword(1) | Trellis-coded modulation |
| Keyword(2) | Spatial multiplexing |
| Keyword(3) | Multiple-input multiple-output (MIMO) |
| Keyword(4) | Interference canceller |
| Keyword(5) | Adaptive equalization |
| Keyword(6) | Maximum likelihood sequence estimation (MLSE) |
| Keyword(7) | Sphere decoding |
| 1st Author's Name | Toshiaki KOIKE |
| 1st Author's Affiliation | Graduate School of Informatics, Kyoto University() |
| 2nd Author's Name | Hidekazu MURATA |
| 2nd Author's Affiliation | Graduate School of Science and Engineering, Tokyo Institute of Technology |
| 3rd Author's Name | Susumu YOSHIDA |
| 3rd Author's Affiliation | Graduate School of Informatics, Kyoto University |
| Date | 2003/10/10 |
| Paper # | RCS2003-149 |
| Volume (vol) | vol.103 |
| Number (no) | 363 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |