Journal of Korea Multimedia Society (한국멀티미디어학회논문지)

Korea Multimedia Society (한국멀티미디어학회)
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A Weighted Preliminary Cut-off Indoor Positioning Scheme Based on Similarity between Peaks of RSSI

최대 RSSI 간의 유사도를 기반으로 한 가중치 부여 사전 컷-오프 실내 위치 추정 방식

  • Kim, Dongjun (Dept. of Computer Engineering, Graduate School, Korea Maritime and Ocean University) ;
  • Son, Jooyoung (Div. of Marine IT Engineering, Korea Maritime and Ocean University)
  • Received : 2018.03.06
  • Accepted : 2018.06.04
  • Published : 2018.07.31
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Abstract

We have previously proposed a preliminary cut-off indoor positioning scheme considering the reference point with the same signal similarity. This scheme estimates the position using the relative rank of the peak of received signal strength from the beacons around user. However, this scheme has a weak point with lower accuracy when there are more than one nearest reference points having the same signal similarity. In order to tackle this, we propose a weighted preliminary cut-off indoor positioning scheme. Firstly, if the above problem occurs, the similarity to the peak of signal strength is considered as well as the relative rank. Next, weights are assigned to the nearest reference points using the similarity to the peak of the received signal strength. Finally, the user's position is estimated by applying the weights. As a result, the weighted preliminary cut-off scheme improves the positioning accuracy by about 7.9% compared to the previous scheme.

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References

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