Multipath Interference Canceller Employing Multipath Interference Replica Generation with Previously Transmitted Packet Combining for Incremental Redundancy in HSDPA(Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Com
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概要
- 論文の詳細を見る
This paper proposes a multipath interference canceller (MPIC) employing multipath interference (MPI) replica generation (MIG) utilizing previously transmitted packet combining (PTPC), which is well-suited to incremental redundancy, in order to achieve a peak throughput of nearly 8 Mbps in a multipath fading environment in high-speed downlink packet access (HSDPA). In our scheme, more accurate MPI replica generation is possible by generating MPI replicas utilizing the softdecision symbol sequence of the previously transmitted packets in addition to that of the latest transmitted packet. Computer simulation results elucidate that the achievable throughput of the MPIC employing MIG-PTPC is increased by approximately 100kbps and 200kbps and the required average received signal energy per symbol-to-background noise power spectrum density ratio (E_S/N_0) per antenna at the throughput of 0.8 normalized by the maximum throughput is improved by about 0.3 and 0.7 dB compared to that of the MPIC using the soft-decision symbol sequence after Rake combining of the last transmitted packet both in 2- and 3-path Rayleigh fading channels for QPSK and 16QAM data modulations, respectively. Furthermore, we clarify that the maximum peak throughput using the proposed MPIC with MIG-PTPC coupled with incremental redundancy achieves approximately 7 Mbps and 8 Mbps with 16QAM and 64QAM data modulations in a 2-path Rayleigh fading channel, respectively, within a 5-MHz bandwidth.
- 社団法人電子情報通信学会の論文
- 2003-01-01
著者
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MIKI Nobuhiko
Radio Access Network Development Department, NTT DOCOMO, INC.
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SAWAHASHI Mamoru
Wireless Laboratories, NTT DoCoMo, Inc.
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Miki Nobuhiko
Wireless Laboratories, NTT DoCoMo, Inc.
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Atarashi Hiroyuki
Wireless Laboratories, NTT DoCoMo, Inc.
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ATARASHI Hiroyuki
Radio Access Network Development Department, NTT DOCOMO, INC.
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Sawahashi Mamoru
Department Of Electrical Engineering Tokyo University Of Science
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Sawahashi Mamoru
Wireless Laboratories Ntt Do Como Inc.
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ABETA Sadayuki
IP Radio Network Development Department, NTT DoCoMo, Inc.
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Abeta Sadayuki
Wireless Laboratories, NTT DoCoMo, Inc.
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Abeta S
Ip Radio Network Development Department Ntt Docomo Inc.
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Abeta Sadayuki
Wireless Laboratories Ntt Docomo Inc.
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Atarashi Hiroyuki
Radio Access Network Development Department Ntt Docomo Inc.
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Atarashi Hiroyuki
Wireless Laboratories Ntt Docomo Inc.
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Miki Nobuhiko
Radio Access Network Development Department Ntt Docomo Inc.
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