Investigation on Optimum Control Interval for Intra-Cell Fractional TPC Using AMC for Shared Channel in Evolved UTRA Uplink
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概要
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This paper presents the optimum control interval for intra-cell fractional transmission power control (TPC) for a shared data channel employing frequency domain channel-dependent scheduling and adaptive modulation and coding (AMC) in the Evolved UTRA uplink using single-carrier (SC)-FDMA radio access. The simulation results show that the best attenuation factor in the fractional TPC is approximately 0.6 for achieving the maximum user throughput when the maximum target received signal power, P0 is -60dBm. Then, we show that the optimum averaging interval for the desired signal level, which corresponds to a substantial control interval for the fractional TPC, is approximately 100-200msec regardless of the maximum Doppler frequency up to 222Hz and the distance at the shadowing correlation of 0.5. Throughout the simulation results, we verify that slow intra-cell fractional TPC associated with fast AMC is effective in achieving the maximum cell throughput and cell-edge user throughput.
- 2009-05-01
著者
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KISHIYAMA Yoshihisa
Radio Access Network Development Department, NTT DOCOMO, INC.
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HIGUCHI Kenichi
Department of Electrical Engineering, Tokyo University of Science
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SAWAHASHI Mamoru
Department of Information Network Engineering, Musashi Institute of Technology
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Higuchi K
Wireless Research Laboratories Ntt Docomo Inc.
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Higuchi K
Department Of Electrical Engineering Tokyo University Of Science
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NISHIKAWA Daisuke
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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Nishikawa Daisuke
Radio Access Network Development Department Ntt Docomo Inc.
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Kishiyama Yoshihisa
Radio Access Network Development Department Ntt Docomo Inc.
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Kishiyama Yoshihisa
Wireless Laboratories Ntt Do Como Inc.
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Higuchi Kenichi
Department Of Electrical Engineering Tokyo University Of Science
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Kakura Yoshikazu
Radio Access Network Development Department Ntt Docomo Inc.
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Kishiyama Yoshihisa
Radio Access Network Development Department NTT DOCOMO INC
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