Antenna Verification Method for Multipath Interference Canceller Based on Replica Generation per Transmit Antenna with Phase Control Transmit Diversity in W-CDMA Forward Link(Terrestrial Radio Communications)
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概要
- 論文の詳細を見る
This paper presents a multipath interference canceller (MPIC) configuration based on multipath interference (MPI) replica generation per transmit antenna (called PTA-MPIC). This configuration is associated with Space Time Transmit Diversity (STTD) for the common control physical channel (CCPCH), which takes advantage of tentative decision data after STTD decoding, and with closed-loop type phase control (PC) transmit diversity for the dedicated physical channel (DPCH) employing tentative decision data after diversity combining, in the W-CDMA forward link. This paper also proposes transmitter carrier phase verification, i.e., an antenna verification method used in PC transmit diversity, that utilizes the dedicated pilot symbols in a DPCH after the PTA-MPIC removes the MPI components. The one-stage PTA-MPIC removes the MPI from the common pilot channel (CPICH), the CCPCH, and the synchronization channel (SCH). The simulation results show that this canceller reduces the required average transmit Eb/No of the DPCH at the average BER of 10^<-3> by approximately 3.0dB compared to that using a MF-based Rake receiver (the transmit power ratio of each common channel to DPCH is RCPICH/DPCH = 3 dB, RCCPCH/DPCH = 5 dB, and RSCH/DPCH = 3 dB, with TPC and without antenna diversity reception at the user equipment). Furthermore, it is shown that in the two-stage PTA-MPIC with MPI suppression for all channels associated with PC transmit diversity, the required average transmit Eb/No employing the proposed antenna verification is reduced by approximately 0.3 dB, 0.5 dB, and 1.2 dB compared to that using the conventional antenna verification when the transmission power ratio of the interfering DPCH to the desired DPCH is Rint/Des = OdB, 3dB, and 6dB for ten DPCHs. This is because the number of detection errors of the transmitted carrier phase in the second antenna due to feedback information bit decoding error is reduced.
- 社団法人電子情報通信学会の論文
- 2004-08-01
著者
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HIGUCHI Kenichi
Department of Electrical Engineering, Tokyo University of Science
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Higuchi K
Department Of Electrical Engineering Tokyo University Of Science
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Higuchi Kenichi
Ip Radio Network Development Department Ntt Docomo Inc.
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Higuchi Kenichi
R&d Department Ntt Mobile Communications Network Inc.
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PRIANTORO Akhmad
Nara Institute of Science and Technology
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YAMAMOTO Heiichi
Nara Institute of Science and Technology
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SAWAHASHI Mamoru
IP Radio Network Development Department, NTT DoCoMo, Inc.
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Sawahashi Mamoru
Ip Radio Network Development Department Ntt Docomo Inc.
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Sawahashi Mamoru
Wireless Laboratories Ntt Do Como Inc.
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Sawahashi M
Ip Radio Network Development Department Ntt Docomo Inc.
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Yamamoto Heiichi
Graduate School Of Information Science Nara Institute Of Science And Technology (naist)
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Yamamoto Heiichi
Nara Inst. Sci. And Technol. Ikoma‐shi Jpn
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