Presentation 2004/7/9
Differential Modulated Pilot Symbol Assisted Adaptive OFDM for Reducing the MLI with Predicted FBI
Chang-Jun AHN, Satoshi Takahashi, Hiroshi Harada,
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Abstract(in English) In an AMS/OFDM system, base station is in control of the modulation level of each subcarriers, and then, adaptive modulated packet is transmitted from the base station to the mobile station, In this case, the mobile station is required the modulation level information (MLI) to demodulate the received packet. The MLI is generally transmitted as a data symbol, therefore, the throughput is degraded. Moreover, it is necessary to have some transmission delay times and the processing time to make an adaptive modulation command (AMC) using feedback information (FBI). With the FBI delay and processing time, the system performance might be degraded. To reduce these problems, in this paper, we propose a differential modulated pilot symbol assisted adaptive OFDM for reducing the MLI with predicted FBI.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) AMS/OFDM / MLI / FBI
Paper # NS2004-73,RCS2004-109
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Committee NS
Conference Date 2004/7/9(1days)
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Registration To Network Systems(NS)
Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Differential Modulated Pilot Symbol Assisted Adaptive OFDM for Reducing the MLI with Predicted FBI
Sub Title (in English)
Keyword(1) AMS/OFDM
Keyword(2) MLI
Keyword(3) FBI
1st Author's Name Chang-Jun AHN
1st Author's Affiliation National Institute of Information and Communications Technology()
2nd Author's Name Satoshi Takahashi
2nd Author's Affiliation National Institute of Information and Communications Technology
3rd Author's Name Hiroshi Harada
3rd Author's Affiliation National Institute of Information and Communications Technology
Date 2004/7/9
Paper # NS2004-73,RCS2004-109
Volume (vol) vol.104
Number (no) 184
Page pp.pp.-
#Pages 4
Date of Issue