| Presentation | 2003/2/27 Frequency and Space Diversity for Orthogonal Multicode DS-CDMA Takeshi ITAGAKI, Tomoki SAO, Fumiyuki ADACHI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Direct sequence code division multiple access (DS-CDMA) provides flexible data transmissions in wide range of data rates by the use of orthogonal multicode multiplexing. In a frequency selective fading channel, when code multiplexing order becomes higher, the bit error rate (BER) performance is severely degraded since the destruction of othogonality among spreading codes becomes severer due to increasing inter-path interference. In this paper, we propose a technique to restore the othogonality while achieving frequency diversity effect by the application of frequency-domain equalization technique used in MC-CDMA receivers to multicode DS-CDMA systems. It is found by computer simulations that the BER performance of orthogonal multicode DS-CDMA in frequency selective fading channel can be significantly improved by the combined use of minimum mean square error combining (MMSEC) and antenna diversity reception. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Multicode DS-CDMA, / MMSEC / Frequency selective fading |
| Paper # | SST2002-125,A・P2002-224,RCS2002-341,MoMuC2002-150,NW2002-232 |
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| Conference Information | |
| Committee | MW |
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| Conference Date | 2003/2/27(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Microwaves (MW) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Frequency and Space Diversity for Orthogonal Multicode DS-CDMA |
| Sub Title (in English) | |
| Keyword(1) | Multicode DS-CDMA, |
| Keyword(2) | MMSEC |
| Keyword(3) | Frequency selective fading |
| 1st Author's Name | Takeshi ITAGAKI |
| 1st Author's Affiliation | Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University() |
| 2nd Author's Name | Tomoki SAO |
| 2nd Author's Affiliation | Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University |
| 3rd Author's Name | Fumiyuki ADACHI |
| 3rd Author's Affiliation | Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University |
| Date | 2003/2/27 |
| Paper # | SST2002-125,A・P2002-224,RCS2002-341,MoMuC2002-150,NW2002-232 |
| Volume (vol) | vol.102 |
| Number (no) | 681 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |