3rd International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications

Research Article

Spectrum Survey in Singapore: Occupancy Measurements and Analyses

  • @INPROCEEDINGS{10.1109/CROWNCOM.2008.4562457,
        author={Habibul Islam and Choo Leng Koh and Ser Wah Oh and Xianming Qing and Yoke Yong Lai and Cavin Wang and Ying-Chang Liang and Bee Eng Toh and Francois Chin and Geok Leng Tan and William Toh},
        title={Spectrum Survey in Singapore: Occupancy Measurements and Analyses},
        proceedings={3rd International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications},
        keywords={singapore spectrum survey spectrum occupancy ambient noise occupancy threshold average duty cycle},
  • Habibul Islam
    Choo Leng Koh
    Ser Wah Oh
    Xianming Qing
    Yoke Yong Lai
    Cavin Wang
    Ying-Chang Liang
    Bee Eng Toh
    Francois Chin
    Geok Leng Tan
    William Toh
    Year: 2008
    Spectrum Survey in Singapore: Occupancy Measurements and Analyses
    DOI: 10.1109/CROWNCOM.2008.4562457
Habibul Islam1,*, Choo Leng Koh1,*, Ser Wah Oh1,*, Xianming Qing1,*, Yoke Yong Lai2,*, Cavin Wang2,*, Ying-Chang Liang1,*, Bee Eng Toh2,*, Francois Chin1,*, Geok Leng Tan2,*, William Toh2,*
  • 1: Institute for Infocomm Research (I2R), 21 Heng Mui Keng Terrace, Singapore 119613
  • 2: Info-communication Development Authority (IDA) of Singapore, 8 Temasek Boulevard, Singapore 038988
*Contact email: habibul@i2r.a-star.edu.sg, clkoh@i2r.a-star.edu.sg, swoh@i2r.a-star.edu.sg, qingxm@i2r.a-star.edu.sg, LAI_Yoke_Yong@ida.gov.sg, Cavin_WANG@ida.gov.sg, ycliang@i2r.a-star.edu.sg, TOH_Bee_Eng@ida.gov.sg, chinfrancois@i2r.a-star.edu.sg, TAN_Geok_Leng@ida.gov.sg, William_TOH@ida.gov.sg


We study the 24-hour spectrum usage pattern in Singapore in the frequency bands ranging from 80 MHz to 5850 MHz. The objectives are to find how the scarce radio spectrum allocated to different services is utilized in Singapore and identify the bands that could be accessed for future opportunistic use due to their low or no active utilization. The results from the spectrum measurements taken over 12 weekday periods reveal that a significant amount of spectrum in Singapore has very low occupancy all the time. The occupancy is quantified as the amount of spectrum detected above a certain received power threshold. The outcome of this study suggests that Singapore has a great potential for employing emerging spectrum sharing technology such as the cognitive radio technology to accommodate enormous demands for future wireless services. However, this study of spectrum survey is preliminary in its nature and future long term studies need to be performed to determine any potential secondary usage on those channels that have low or no active utilization.