| Presentation | 2004/1/8 A New Signal Detection Scheme Combining ZF and K-best Algorithms for OFDM/SDM Takafumi FUJITA, Takeshi ONIZAWA, Wenjie JIANG, Daisei UCHIDA, Takatoshi SUGIYAMA, Atsushi OHTA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This report proposes a reduced complexity detection scheme that combines Zero-Forcing (ZF) and K-best algorithms for Orthogonal Frequency Division Multiplexing with Space Division Multiplexing (OFDM/SDM) systems. Although Maximum Likelihood Detection (MLD) is known as the optimal signal detection algorithm for spatially multiplexed signals, it suffers from exponential complexity against the number of transmit antennas. In order to reduce the complexity from exponential to proportional order, the K-best algorithm is applied. In addition, performance degradation caused by the K-best algorithm is compensated by the front-end signal processing of the ZF algorithm, which requires negligible complexity compared to the MLD algorithm. Computer simulation results for 16 Quadrature Amplitude Modulation (16QAM) and 64QAM signals are also shown in this report. It is shown that the performance degradation from the MLD algorithm is suppressed to only about 1.5 dB at required packet error rate (PER) =10～2, when either 16QAM or 64QAM is applied and there are three transmit and three receive antennas. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OFDM / SDM / MIMO / Zero-Forcing / K-best algorithm / IEEE 802.11a |
| Paper # | DSP2003-171,SAT2003-168,RCS2003-266 |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 2004/1/8(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Satellite Telecommunications (SAT) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A New Signal Detection Scheme Combining ZF and K-best Algorithms for OFDM/SDM |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | SDM |
| Keyword(3) | MIMO |
| Keyword(4) | Zero-Forcing |
| Keyword(5) | K-best algorithm |
| Keyword(6) | IEEE 802.11a |
| 1st Author's Name | Takafumi FUJITA |
| 1st Author's Affiliation | NTT Access Network Service Systems Laboratories, NTT Croporation() |
| 2nd Author's Name | Takeshi ONIZAWA |
| 2nd Author's Affiliation | NTT Access Network Service Systems Laboratories, NTT Croporation |
| 3rd Author's Name | Wenjie JIANG |
| 3rd Author's Affiliation | NTT Access Network Service Systems Laboratories, NTT Croporation |
| 4th Author's Name | Daisei UCHIDA |
| 4th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 5th Author's Name | Takatoshi SUGIYAMA |
| 5th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 6th Author's Name | Atsushi OHTA |
| 6th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| Date | 2004/1/8 |
| Paper # | DSP2003-171,SAT2003-168,RCS2003-266 |
| Volume (vol) | vol.103 |
| Number (no) | 549 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |