Presentation | 2004/2/25 Complexity-reduced Maximum Likelihood Detection Based on Replica Candidate Selection with QR Decomposition Using Pilot-Assisted Channel Estimation and Ranking for MIMO Multiplexing Using OFCDM Hiroyuki Kawai, Kenichi Higuchi, Mamoru Sawahashi, Takumi Itoh, Yoshikazu Kakura, Akihisa Ushirokawa, Hiroyuki Seki, |
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Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | This paper proposes the configuration of complexity-reduced maximum likelihood detection (MLD) based on replica-candidate selection with QR Decomposition employing pilot channel-assisted channel estimation and ranking of transmitted signals for Orthogonal Frequency and Code Division Multiplexing (OFCDM) MIMO multiplexing. In the proposed method, transmitted signals are ranked according to received signal-to-interference plus noise power ratio (SINR) using pilot channel every Transmission Time Interval (TTI) and channel matrix estimate is converted into upper-triangular matrix by QR decomposition, followed by successive reduction of symbol replica candidates based on M-algorithm. Simulation results show that by employing pilot channel-assisted MLD with QR decomposition in 4-by-4 MIMO multiplexing, throughput of 1 Gbps is achieved at the average received E_b/N_0 (signal energy per bit-to-noise power spectrum density ratio) of approximately 10 dB in OFCDM access with 8-code multiplexing for the spreading factor of 8 assuming a 100-MHz bandwidth. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | VSF-OFCDM / MIMO / Maximum likelihood detection / BLAST / QR decomposition / M-algorithm |
Paper # | WBS2003-96,A・P2003-289,RCS2003-312,MoMuC2003-102,MW2003-258 |
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Committee | MoMuC |
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Conference Date | 2004/2/25(1days) |
Place (in Japanese) | (See Japanese page) |
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Topics (in Japanese) | (See Japanese page) |
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Paper Information | |
Registration To | Mobile Multimedia Communications(MoMuC) |
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Language | JPN |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | Complexity-reduced Maximum Likelihood Detection Based on Replica Candidate Selection with QR Decomposition Using Pilot-Assisted Channel Estimation and Ranking for MIMO Multiplexing Using OFCDM |
Sub Title (in English) | |
Keyword(1) | VSF-OFCDM |
Keyword(2) | MIMO |
Keyword(3) | Maximum likelihood detection |
Keyword(4) | BLAST |
Keyword(5) | QR decomposition |
Keyword(6) | M-algorithm |
1st Author's Name | Hiroyuki Kawai |
1st Author's Affiliation | NTT DoCoMo, Inc.() |
2nd Author's Name | Kenichi Higuchi |
2nd Author's Affiliation | NTT DoCoMo, Inc. |
3rd Author's Name | Mamoru Sawahashi |
3rd Author's Affiliation | NTT DoCoMo, Inc. |
4th Author's Name | Takumi Itoh |
4th Author's Affiliation | NEC Corporation |
5th Author's Name | Yoshikazu Kakura |
5th Author's Affiliation | NEC Corporation |
6th Author's Name | Akihisa Ushirokawa |
6th Author's Affiliation | NEC Corporation |
7th Author's Name | Hiroyuki Seki |
7th Author's Affiliation | Fujitsu Laboratories Ltd. |
Date | 2004/2/25 |
Paper # | WBS2003-96,A・P2003-289,RCS2003-312,MoMuC2003-102,MW2003-258 |
Volume (vol) | vol.103 |
Number (no) | 683 |
Page | pp.pp.- |
#Pages | 6 |
Date of Issue |