| Presentation | 2012/8/23 Autologous Spectrum Regenerating Equalization Scheme using Soft Replica for Reception Performance Improvement of Sub-spectrum Suppressed Transmission on DSD Jun MASHINO, Jun-ichi Abe, Takatoshi SUGIYAMA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Direct spectrum division (DSD) and sub-spectrum suppressed transmission are introduced to achieve highly efficient frequency usage on satellite transponder for satellite communication systems. Single-carrier modulated signal is directly divided into sub-spectra by DSD and some sub-spectra are suppressed at the transmitter in order to reduce total occupied bandwidth. At the receiver, since proposed equalization processing with autologous spectrum regeneration (ASR) is iteratively applied, inter symbol interference (ISI) due to the sub-spectrum suppression can be compensated. However, in the previous study, error propagation may occur when including bit error in preliminary decoded bit because hard replica was used to generate sub-spectrum replica by re-encoding and re-modulating hard decision bits. In this paper, we apply soft replica generated directly from likelihood of information bits to solve the problem and to improve the bit error performance. We show the simulation results about bit error performance, equalization gain, and frequency utilization efficiency for our proposal. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Sub-spectrum Suppression / Direct Spectrum Division / Iterative Equalization / Filtering |
| Paper # | RCS2012-105 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2012/8/23(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) | Autologous Spectrum Regenerating Equalization Scheme using Soft Replica for Reception Performance Improvement of Sub-spectrum Suppressed Transmission on DSD |
| Sub Title (in English) | |
| Keyword(1) | Sub-spectrum Suppression |
| Keyword(2) | Direct Spectrum Division |
| Keyword(3) | Iterative Equalization |
| Keyword(4) | Filtering |
| 1st Author's Name | Jun MASHINO |
| 1st Author's Affiliation | NTT Access Network Services Systems Laboratories, NTT Corporation() |
| 2nd Author's Name | Jun-ichi Abe |
| 2nd Author's Affiliation | NTT Access Network Services Systems Laboratories, NTT Corporation |
| 3rd Author's Name | Takatoshi SUGIYAMA |
| 3rd Author's Affiliation | NTT Access Network Services Systems Laboratories, NTT Corporation |
| Date | 2012/8/23 |
| Paper # | RCS2012-105 |
| Volume (vol) | vol.112 |
| Number (no) | 192 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |