• Title/Summary/Keyword: TV방송대역

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Analysis on Co-use Parameter in TV Band Using a Transmisssion Probability Concept of Interfering Transmitter (간섭 송신기의 전송확률 개념을 이용한 방송대역 공용 파라미터 분석)

  • Cho, Ju-Phil
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.16 no.8
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    • pp.1587-1592
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    • 2012
  • Analysis on co-use parameters in TV frequency channels is essential to utilize a TV White Space(TVWS) efficiently. A transmission probability of interfering transmitter can be used as some criteria for performance evaluation of the systems that co-use the cochannels. We considered a duty cycle as a parameter for getting the method how heterogeneous systems can use simultaneously a co-channel in TVWS. We analyze the transmission probability of interfering transmitter with an assumption that the probability is the same as the duty cycle, a time that it spends in an active state as a fraction of the total under consideration. In order to make an analysis of relationship between duty cycle and performances of two systems. We take into consideration on the case that WLAN is an victim receiver and WiBro is a interfering transmitter. Analyzed coexistence results may be widely applied into the technique developed to get the coexisting condition for wireless devices using many communication protocols in same frequency.

Analysis on Effect of Interference between Different Communication Systems in Broadcasting Channel (방송채널에서 이종 통신시스템간 간섭의 영향 분석)

  • Kim, In-Hwan;Baik, Heung-Ki;Cho, Ju-Phil
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.48 no.10
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    • pp.7-12
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    • 2011
  • The effect of frequency interference situation between WiBro and WLAN in TV White Space band was taken into account in this paper. We assumed the using frequency in each system is applied in co-channel. When it comes to co-channel interference case, the minimum distance between WiBro ME and WLAN UE should be at least 210m if the maximum transmitter power of WiBro UE of 25dBm is limited. Analysis results of this paper can provide efficient reference and guideline to make spectrum plan for deploying WiBro and WLAN in TVWS.

Analysis of Maximal Transmitter Power according to Distance between Hetero Systems Co-using a Co-channel (이기종시스템에서 동일채널공유시 단말간 이격거리에 따른 최대 송신전력 분석)

  • Cho, Ju-Phil;Lee, Il-Kyoo
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.15 no.12
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    • pp.2505-2510
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    • 2011
  • In this paper, we consider to obtain the criteria for maximal power of interfering transmitter according to distance between WiBro and WLAN in TVWS. We analyze this criteria as a parameter for co-use when hetero systems share the same frequency channels. In order to make an analysis of relationship between distance and power of two systems, we take into consideration on two cases. First, WiBro is an interfering transmitter and WLAN is a victim receiver. Second, WLAN is an interfering transmitter and WiBro is a victim receiver. Analyzed coexistence results under various co-use scenarios may be widely applied into the technique developed to get the coexisting condition for wireless devices using many communication protocols in same frequency.

Analysis on Co-use Performance of System according to Duty Cycle of Interfering Transmitter Signal (간섭 송신기 신호 duty cycle에 따른 시스템 공유 성능 분석)

  • Cho, Ju-Phil
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.16 no.2
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    • pp.222-227
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    • 2012
  • In this paper, we analyze the total performance according to duty cycle of interfering transmitter in hetero systems. We analyze this criteria as a parameter for co-use when hetero systems share the same frequency channels. In order to make an analysis of relationship between duty cycle and performances of two systems. We take into consideration on the case that WiBro is an victim receiver and WLAN is a interfering transmitter. Analyzed coexistence results may be widely applied into the technique developed to get the coexisting condition for wireless devices using many communication protocols in same frequency.

Analysis of Interference Probability according to Distance between Communication Systems in Co-channel (통신시스템간 동일채널에서 단말간 이격거리에 따른 간섭확률 분석)

  • Cho, Ju-Phil;Lee, Il-Kyoo
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.15 no.11
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    • pp.2307-2312
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    • 2011
  • In this paper, we analyze the interference probability according to distance between mobile stations as a parameter which is be used for analysis for co-existing in co-channel of different systems. In order to consider interfering between each systems, we analyze two cases. First, WiBro is an interfering transmitter and WLAN is a victim receiver. Second, WLAN is an interfering transmitter and WiBro is a victim receiver. When interfering transmitter is WiBro and WLAN, interference probability according to distance between systems is analyzed by setting transmit power of 25 and 23 dBm, respectively. These simulation results can be applied into criteria data for channel co-existing issue in real field.

A Parameter Analysis for System Co-existence between Adjacent Channels in Extended Hata Channel Environment (Extended Hata 채널 환경에서 인접채널간 시스템 공존을 위한 파라미터 분석)

  • Cho, Ju-Phil
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.16 no.5
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    • pp.879-884
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    • 2012
  • In this paper, we analyze the sharing parameters in order to co-use of different communication systems in adjacent channels. We analyze the performance result according to various density of interfering transmitter and transmitter output in hetero systems. In order to get the relationship with between density of interfering transmitter and transmitter output, we consider the case that WiBro is an interfering transmitter an WLAN is a victim receiver. When the interferer density is 50/$km^2$ and the center frequency of WLAN and WiBro are 185 and 201MHz respectively, required guard band is 4MHz. Analyzed coexistence results may be widely applied into the technique developed to get the coexisting condition for wireless devices using many communication protocols in same frequency.