A Transmission Power Control Technique on a TDD-CDMA/TDMA System for Wireless Multimedia Networks

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概要

• 論文の詳細を見る

• A transmission power control technique on a TDD-CDMA/TDMA system for wireless multimedia networks is proposed. The assumed network connects mobile terminals to a node of an ATM based high speed LAN through a radio central unit. Only human interface facilities are implemented into the terminal so that users access integrated services through the node of the network. The uplink (from a mobile terminal to a radio central unit) employs a CDMA scheme to transmit human interface signals (〜2.4kbit/s) and the downlink employs a TDMA scheme to transmit display interface signals (〜24 Mbit/s). Both the CDMA and the TDMA signals occupy the same frequency band. To mitigate bit error rate degradation due to the fading, the radio central unit estimates the impulse response of the channel from the received CDMA signals and controls the transmission power of the TDMA signals to compensate the fading attenuation. The bit error rate performance of the downlink with the proposed transmission power control is theoretically analyzed under several fading conditions. Numerical results using the Nakagami-m fading model and recent propagation measurements show that the proposed power control technique compensates the fading attenuation and improves the bit error rate performances. The bit error rate of the downlink is reduced from 10^<-2> to 10^<-5> at the symbol SNR of 20 dB by employing the proposed transmission power control, which is less sensitive to the severity of the fading. Furthermore, the proposed transmission power control is implemented without increasing the terminal complexity because all the processing on the power control of the downlink is carried out only in the radio central unit.

• 社団法人電子情報通信学会の論文
• 1995-08-25

著者

• Kato Shuzo

  Pacific Communications Research Corp.

• Sanada Yukitoshi

  Department Of Electrical And Computer Engineering University Of Victoria

• Kato Shuzo

  NTT Wireless Systems Laboratories

• NAKAGAWA Masao

  Faculty of Science and Technology, Keio University

• Seki K

  Research Center For Materials Science Nagoya University

• Seki Kazuhiko

  Department Of Materials Science Faculty Of Science Hiroshima University

• WANG Qiang

  Department of Chemistry and Chemical Biology, Gunma University

• Wang Q

  Department Of Electrical And Computer Engineering University Of Victoria

• Wang Qiang

  Department Of Materials Processing Engineering Nagoya University

• Bhargava V

  Univ. British Columbia Can

• Bharhgava Vijay

  Department Of Electrical And Computer Engineering University Of Victoria

• Nakagawa Masao

  Keio Univ. Yokohama‐shi Jpn

• Sanada Yukitoshi

  Faculty of Science and Technology, Keio University

• Bhargava Vijay

  Department of Electrical and Computer Engineering, University of Victoria

• Sanada Yukitoshi

  Faculty Of Science And Engineering Keio University

• Nakagawa Masao

  Faculty Of Science And Technology Keio University

• Wang Qiang

  Department Of Chemistry And Chemical Biology Gunma University

• Wang Qiang

  北京気象学院

• Sanada Y

  Dept. Of Electronics And Electrical Engineering Keio University

• Sanada Y

  Faculty Of Engineering Tokyo Institute Of Technology

• Kohri Sachiko

  Materials And Electronic Devices Laboratory Mitsubishi Electric Corporation

• Sanada Yukitoshi

  Faculty Of Engineering Tokyo Institute Of Technology

• Wang Qiang

  Department Of Anesthesiology Plastic Surgery Hospital Chinese Academy Of Medical Sciences And Peking

• Seki Kazuhiko

  Department Of Chemistry Nagoya University

• Nakagawa Masao

  Faculty Of Agriculture The University Of Tokyo

• Bhargava Vijay

  Department of Electrical and Computer Eng., University of Victoria

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