| Presentation | 2004/2/25 A Study on Diversity Gain and Coding Gain in Coded Orthogonal Multi-Carrier Modulation Systems Masahiro FUJI, Makoto ITAMI, Kohji ITOH, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we present a performance evaluation of diversity gain and coding gain in coded orthogonal multi-carrier modulation systems. Coded-OFDM systems in time and frequency selective fading channels, in sharp contrast to uncoded-OFDM systems, turn out to enjoy equivalent diversity effect due to the redundancy of the channel coding in addition to the coding gain. On the other hand, OFDM-Code Division Multiplexing (COM) systems in the down-link are known to achieve the full diversity gain owing to the scheme in which each data symbol is spread over the channel bandwidth by modulating OFDM carrier signals according to the. signature sequence. In this paper, we introduce Pairwise Error Rate (PER) using Maximum Likelihood (ML) decoding algorithm in order to theoretically evaluate the system performances in the optimal reception and compare Coded-OFDM system with Coded-OFDM-CDM system. We provide that Coded-OFDM-CDM system outperforms Coded-OFDM system due to the diversity effect when the systems make use of a channel encoding with small distance. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Orthogonal Multi-Carrier Modulation / Diversity Gain / Channel Coding Gain / Code Division Multiplexing |
| Paper # | WBS2003-100,A・P2003-293,RCS2003-316,MoMuC2003-106,MW2003-262 |
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| Conference Information | |
| Committee | MoMuC |
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| Conference Date | 2004/2/25(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| 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) | A Study on Diversity Gain and Coding Gain in Coded Orthogonal Multi-Carrier Modulation Systems |
| Sub Title (in English) | |
| Keyword(1) | Orthogonal Multi-Carrier Modulation |
| Keyword(2) | Diversity Gain |
| Keyword(3) | Channel Coding Gain |
| Keyword(4) | Code Division Multiplexing |
| 1st Author's Name | Masahiro FUJI |
| 1st Author's Affiliation | Department of Applied Electronics, Tokyo University of Science() |
| 2nd Author's Name | Makoto ITAMI |
| 2nd Author's Affiliation | Department of Applied Electronics, Tokyo University of Science |
| 3rd Author's Name | Kohji ITOH |
| 3rd Author's Affiliation | Department of Applied Electronics, Tokyo University of Science |
| Date | 2004/2/25 |
| Paper # | WBS2003-100,A・P2003-293,RCS2003-316,MoMuC2003-106,MW2003-262 |
| Volume (vol) | vol.103 |
| Number (no) | 683 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |