2nd International ICST Conference on Communications and Networking in China

Research Article

Automatic Transmit Power Control of a Digital Fixed Wireless Link with Co-Channel Interference

  • @INPROCEEDINGS{10.1109/CHINACOM.2007.4469597,
        author={Robert H. Morelos-Zaragoza and Kyoung-Whoan Suh and Joo-Hwan Lee},
        title={Automatic Transmit Power Control of a Digital Fixed Wireless Link with Co-Channel Interference},
        proceedings={2nd International ICST Conference on Communications and Networking in China},
        publisher={IEEE},
        proceedings_a={CHINACOM},
        year={2008},
        month={3},
        keywords={Power Control Fixed Wireless.},
        doi={10.1109/CHINACOM.2007.4469597}
    }
    
  • Robert H. Morelos-Zaragoza
    Kyoung-Whoan Suh
    Joo-Hwan Lee
    Year: 2008
    Automatic Transmit Power Control of a Digital Fixed Wireless Link with Co-Channel Interference
    CHINACOM
    IEEE
    DOI: 10.1109/CHINACOM.2007.4469597
Robert H. Morelos-Zaragoza1,*, Kyoung-Whoan Suh2,*, Joo-Hwan Lee3,*
  • 1: San Jose State University, San Jose, CA 95192-0084 USA (phone: 1-408-924-3879; fax: 1-408-924-3925
  • 2: Research Institute of Industrial-Educational Technology of Kangnam University, Korea
  • 3: Electronics and Telecommunications Research Institute (ETRI)
*Contact email: r.morelos-zaragoza@ieee.org, kwsuh@kangnam.ac.kr, joohlee@etri.re.kr

Abstract

In this paper, a study is presented of the dynamic behavior of an automatic transmit power control (ATPC) loop in a single fixed wireless system (FWS) link subject to multipath fading and an uncorrelated co-channel interferer that does not use ATPC (this represents a so-called non-ATPC FWS link or a fixed satellite link). Fundamental questions include the sensitivity of an ATPC link to multipath interference and the co-channel interference that may be caused by a non-ATPC interferer. In the context of the present project, a good example of a non-ATPC interferer is a fixed satellite to which one antenna in a fixed microwave link has partial view. A computer model was developed that constitutes a useful tool in describing; simulating and analyzing an ATPC loop in a single FWS link. With the aid of this model, results are presented on the sensitivity of an ATPC loop in a FWS link with respect to channel conditions, non-ATPC interference and parameter settings.