Presentation | 1999/10/14 An Adaptive Array Antenna for Downlink Transmission in a DS-CDMA System Minako KITAHARA, Yasutaka OGAWA, Takeo OHGANE, |
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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 user. 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 antnna suppresses high-bit rate signals strongly. That 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 # | A・P99-117 |
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Conference Information | |
Committee | AP |
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Conference Date | 1999/10/14(1days) |
Place (in Japanese) | (See Japanese page) |
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Topics (in Japanese) | (See Japanese page) |
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Paper Information | |
Registration To | Antennas and Propagation (A・P) |
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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 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 | Sendai Resarch Laboratory, Kokusai Electric Co., Ltd.() |
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 | 1999/10/14 |
Paper # | A・P99-117 |
Volume (vol) | vol.99 |
Number (no) | 354 |
Page | pp.pp.- |
#Pages | 8 |
Date of Issue |