| Presentation | 2003/2/26 Analysis of the optimum spreading factor for MC-CDMA with RCPT-coded HARQ Deepshikha GARG, Fumiyuki ADACHI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In MC-CDMA, each user's data-modulated symbol to be transmitted is spread over a number of subcarriers using an orthogonal spreading sequence defined in the frequency-domain. As the spreading factor SF becomes larger, the transmission performance improves due to increasing frequency diversity effect; however, the data rate per user decreases. The SF=1 system corresponds to an OFDM system. In an MC-CDMA system the same total throughput as in the OFDM system can be achieved if the number of users allowed to transmit simultaneously is the same as SF. In this paper, we investigate the optimum spreading factor for MC-CDMA when rate compatible punctured turbo coded hybrid ARQ (RCPT HARQ) is used for error control. It was found that when many strong paths exist, the total downlink throughput is highest when the data is spread over all the subcarriers available; however the highest total uplink throughput is attained with an OFDM system (SF=1). |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | hybrid ARQ / rate compatible ounctured turbo codes / frequency selective channel / MC-CDMA / mobile communications |
| Paper # | SST2002-71,A・P2002-170,RSC2002-287,MoMuC2002-96,MW2002-178 |
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| Conference Information | |
| Committee | MoMuC |
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| Conference Date | 2003/2/26(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 | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Analysis of the optimum spreading factor for MC-CDMA with RCPT-coded HARQ |
| Sub Title (in English) | |
| Keyword(1) | hybrid ARQ |
| Keyword(2) | rate compatible ounctured turbo codes |
| Keyword(3) | frequency selective channel |
| Keyword(4) | MC-CDMA |
| Keyword(5) | mobile communications |
| 1st Author's Name | Deepshikha GARG |
| 1st Author's Affiliation | Department of Electrical and Communication Engineering, School of Engineering, Tohoku University() |
| 2nd Author's Name | Fumiyuki ADACHI |
| 2nd Author's Affiliation | Department of Electrical and Communication Engineering, School of Engineering, Tohoku University |
| Date | 2003/2/26 |
| Paper # | SST2002-71,A・P2002-170,RSC2002-287,MoMuC2002-96,MW2002-178 |
| Volume (vol) | vol.102 |
| Number (no) | 677 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |