| Presentation | 2008-11-20 Efficient Signal Detection for Block Spreading CDMA signals Based on the Expectation Maximization Algorithm Shuhei SUGIYAMA, Kohei OTAKE, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Block-Spread CDMA (BS/CDMA) system has been thought as an effective communication system because of enabling MUI-free transmission even under the multi-path environments. Although the system is MUI-free, there occurs interference on each data-block, that is, inter-symbol interference (ISI), and the MMSE detector to suppress it, is reported. In this paper, we propose an efficient scheme in introducing the expectation maximization algorithm (EMA) to the BS/CDMA signal detection, aimed to outperform the MMSE detector. Specifically, whereas the observed received data is subjected to the ISI in nature, we specify the complete data in the EMA to be obtained by decomposing it into each data symbol components, which results in the independent symbol update processing in the M-step and thus leads to low computational complexity. The computer simulation results show that the proposed detector significantly outperforms the conventional MMSE detector in terms of BER performance. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | BS/CDMA / EM Algorithm / Complete Data / Antenna Array / Time-domain Detection |
| Paper # | RCS2008-143 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2008/11/12(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) | Efficient Signal Detection for Block Spreading CDMA signals Based on the Expectation Maximization Algorithm |
| Sub Title (in English) | |
| Keyword(1) | BS/CDMA |
| Keyword(2) | EM Algorithm |
| Keyword(3) | Complete Data |
| Keyword(4) | Antenna Array |
| Keyword(5) | Time-domain Detection |
| 1st Author's Name | Shuhei SUGIYAMA |
| 1st Author's Affiliation | Faculty of Engineering, Hosei University() |
| 2nd Author's Name | Kohei OTAKE |
| 2nd Author's Affiliation | Faculty of Engineering, Hosei University |
| Date | 2008-11-20 |
| Paper # | RCS2008-143 |
| Volume (vol) | vol.108 |
| Number (no) | 305 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |