| Presentation | 2000/2/18 An Adaptive Array Antenna for Downlink Transmission under Many User Environment in a DS-CDMA System Minako KITAHARA, Yasutaka OGAWA, Takeo OHGANE, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Multi-rate services are flexibly available by a DS-CDMA technique. Since high-bit rate signals have high transmitted power, they cause large multiple access interference(MAI) to low-bit rate users. A base station adaptive antenna has been studied to suppress the large MAI from the high-speed users. In an uplink case, the adaptive antenna for a low-speed user needs to reduce received power of the high-speed signals. This is carried out by forming nulls toward the high-bit rate users. In the downlink case, however, the adaptive antenna for the high-bit rate user needs to reduce transmitted power toward the low-bit rate users. The conventional adaptive antenna suppresses high-bit rate signals strongly. This is, the interference to the low-bit rate users cannot be rejected. In this paper, we propose a novel adaptive array structure to reduce the high-bit rate interference. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | DS-CDMA / Adaptive Array Antenna / Multi-rate Services / Downlink |
| Paper # | SST99-74,ITS99-70,A・P99-196,RCS99-216,MW99-236 |
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| Conference Information | |
| Committee | ITS |
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| Conference Date | 2000/2/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Intelligent Transport Systems Technology (ITS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An Adaptive Array Antenna for Downlink Transmission under Many User Environment in a DS-CDMA System |
| Sub Title (in English) | |
| Keyword(1) | DS-CDMA |
| Keyword(2) | Adaptive Array Antenna |
| Keyword(3) | Multi-rate Services |
| Keyword(4) | Downlink |
| 1st Author's Name | Minako KITAHARA |
| 1st Author's Affiliation | Graduate School of Engineering, Hokkaido University() |
| 2nd Author's Name | Yasutaka OGAWA |
| 2nd Author's Affiliation | Graduate School of Engineering, Hokkaido University |
| 3rd Author's Name | Takeo OHGANE |
| 3rd Author's Affiliation | Graduate School of Engineering, Hokkaido University |
| Date | 2000/2/18 |
| Paper # | SST99-74,ITS99-70,A・P99-196,RCS99-216,MW99-236 |
| Volume (vol) | vol.99 |
| Number (no) | 632 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |