| Presentation | 2003/1/8 Efficient Common Channel Transmission Employing Multi-Beam Antennas for Adaptive Antenna Array Transmit Diversity in W-CDMA Forward Link Taisuke Ihara, Kenichi Higuchi, Takahiro Asai, Mamoru Sawahashi, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes an efficient transmission method for common channels such as the common control physical channel (CCPCH) that utili/es multi-beam antennas instead of the conventional sectored antenna to achieve a harmonized adaptive antenna array beam forming system in the W-CDMA forward link. In the proposed method, by transmitting common channels using multi-beam antennas associated with fixed transmitter antenna weights, the transmission powers of the common channels arc dispersed over all the array antennas with which dedicated physical channels (DPCHs) are transmitted by adaptive antenna array beam forming, thereby avoiding unnecessary additional sectored antennas and power amplifiers with high transmission power. The simulation results elucidate that the multi-beam transmission with a con formal array antenna arrangement suppresses the variance in the transmission power of the common channels among the array antennas more than does a linear array antenna arrangement. The results also show that when the conforma! array antenna arrangement employing eight antennas is used, the maximum transmission power per antenna is reduced b> approximately 4.6 dB compared to that using sectored-antenna transmission, and the variance in the transmission powers among array antennas is less than 2.5 dB. We also show that from the viewpoint of the achievable received signal-to-interference power ratio (SIR) and bit error rate (BER) performance of the CCPCH, the proposed common channel transmission using equal angle-spacing beam is slightly superior to the conventional sectored-antenna transmission. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | W-CDMA / Common channel / Multi-beam antenna / Adaptive antenna array |
| Paper # | DSP2002-153,SAT2002-103,RCS2002-222 |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 2003/1/8(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Satellite Telecommunications (SAT) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Efficient Common Channel Transmission Employing Multi-Beam Antennas for Adaptive Antenna Array Transmit Diversity in W-CDMA Forward Link |
| Sub Title (in English) | |
| Keyword(1) | W-CDMA |
| Keyword(2) | Common channel |
| Keyword(3) | Multi-beam antenna |
| Keyword(4) | Adaptive antenna array |
| 1st Author's Name | Taisuke Ihara |
| 1st Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc.() |
| 2nd Author's Name | Kenichi Higuchi |
| 2nd Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc. |
| 3rd Author's Name | Takahiro Asai |
| 3rd Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc. |
| 4th Author's Name | Mamoru Sawahashi |
| 4th Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc. |
| Date | 2003/1/8 |
| Paper # | DSP2002-153,SAT2002-103,RCS2002-222 |
| Volume (vol) | vol.102 |
| Number (no) | 546 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |