4th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications

Research Article

Capacity achievable by spectrum sharing with adaptive transmit power control: Based on field measurements

  • @INPROCEEDINGS{10.1109/CROWNCOM.2009.5189448,
        author={Hiromasa Fujii and Takahiro  Asai and Yukihiko  Okumura and Ryoko Kawauchi and Ikuo  Hiradate and Hayato Akazawa and Takayuki Sotoyama},
        title={Capacity achievable by spectrum sharing with adaptive transmit power control: Based on field measurements},
        proceedings={4th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications},
        publisher={IEEE},
        proceedings_a={CROWNCOM},
        year={2009},
        month={8},
        keywords={},
        doi={10.1109/CROWNCOM.2009.5189448}
    }
    
  • Hiromasa Fujii
    Takahiro Asai
    Yukihiko Okumura
    Ryoko Kawauchi
    Ikuo Hiradate
    Hayato Akazawa
    Takayuki Sotoyama
    Year: 2009
    Capacity achievable by spectrum sharing with adaptive transmit power control: Based on field measurements
    CROWNCOM
    IEEE
    DOI: 10.1109/CROWNCOM.2009.5189448
Hiromasa Fujii1,*, Takahiro Asai1,*, Yukihiko Okumura1,*, Ryoko Kawauchi2,*, Ikuo Hiradate2,*, Hayato Akazawa2,*, Takayuki Sotoyama2,*
  • 1: Research Laboratories, NTT DOCOMO, INC. 3-5 Hikari-no-oka, Yokosuka, Kanagawa, Japan.
  • 2: Communication System Development Center, Panasonic Mobile Communications Co., Ltd.
*Contact email: fujiihir@nttdocomo.co.jp, asai@nttdocomo.co.jp, okumurayu@nttdocomo.co.jp, kawauchi.ryoko@jp.panasonic.com, hiradate.ikuo@jp.panasonic.com, akazawa.hayato@jp.panasonic.com, sotoyama.tak@jp.panasonic.com

Abstract

We conduct field measurements to assess the effectiveness of the spectrum sharing method using adaptive transmit power control [2]. This investigation assumes a fixed satellite service as the victim and an IMT-Advanced system as the interferer. We evaluate the capacities achieved by adaptive transmit power control in a comparison with fixed-level transmit power control. The results show that adaptive transmit power control attains higher capacities, especially in severe sharing conditions such as the victim receiver operates near a interfering transmitter. We also discuss the impact of introducing interference criteria based on desired signal level at the victim receiver instead of the long-standing noise-based criteria.