| Presentation | 2003/2/28 A Study on Optimum Spreading Factor for Multi-code MC-CDMA Ryohei KIMURA, Fumiyuki ADACHI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Orthogonal frequency division multiplexing (OFDM) is known as an effective transmission technique for achieving very high-speed data transmission in a severe frequency selective fading channel. Recently, multi-carrier code division multiple access (MC-CDMA) has been attracting a lot of attention. MC-CDMA can take advantage of severe frequency selective fading through the frequency-domain spreading/de-spreading and can achieve significantly better transmission performance over DS-CDMA using the time-domain spreading/de-spreading. In this paper, orthogonal multi-code MC-CDMA is considered that multiplexes as many parallel channels as the spreading factor (SF) to achieve the same data rate as OFDM. As larger SF is used, larger inter-code interference is produced due to orthogonality destruction while achieving larger frequency diversity effect. Hence, the SF is an important design parameter. In this paper, assuming minimum mean square error combining (MMSEC), we evaluate, by the means of computer simulation, the bit error rate (BER) performance of orthogonal multi-code MC-CDMA to show that the use of maximum possible SF achieves the best BER performance. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | MC-CDMA / OFDM / DS-CDMA / MMSEC / SF / Frequency selective fading channel |
| Paper # | MoMuC2002-167,SST202-142,A・P2002-241,RCS2002-358,MW2002-2439 |
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| Conference Information | |
| Committee | MoMuC |
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| Conference Date | 2003/2/28(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 Optimum Spreading Factor for Multi-code MC-CDMA |
| Sub Title (in English) | |
| Keyword(1) | MC-CDMA |
| Keyword(2) | OFDM |
| Keyword(3) | DS-CDMA |
| Keyword(4) | MMSEC |
| Keyword(5) | SF |
| Keyword(6) | Frequency selective fading channel |
| 1st Author's Name | Ryohei KIMURA |
| 1st Author's Affiliation | Dept. of Electrical and Communication Engineering, Graduate School of Eneineerine, Tohoku University() |
| 2nd Author's Name | Fumiyuki ADACHI |
| 2nd Author's Affiliation | Dept. of Electrical and Communication Engineering, Graduate School of Eneineerine, Tohoku University |
| Date | 2003/2/28 |
| Paper # | MoMuC2002-167,SST202-142,A・P2002-241,RCS2002-358,MW2002-2439 |
| Volume (vol) | vol.102 |
| Number (no) | 679 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |