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Indoor Human Positioning Tracking Technique to Support High-Quality Life
Toshinori Tsuboi,Takehiro Shiraishi,Nobuyoshi Komuro 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
Information Communication Technology (ICT) is expected to assist the activities of senior persons for raising their quality of life. This paper proposes an indoor human position tracking technique using UHF-band RFID(radio frequency identification). Seniors are liable to forget where they put items, such as a wallet or watch in the house. They could find the lost item if they could recall their movement history. The proposed technique is well satisfies this goal. This paper proposes a new simple positioning technique based on RFID. Simulations and experiments are conducted to confirm the basic performance of the proposed positioning algorithm.
Effect of the Interference Canceler on the Nonorthogonal CSK/CDMA ALOHA
Nobuyoshi KOMURO,Hiromasa HABUCHI,Toshinori TSUBOI 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
Nonorthogonal Code Shift Keying Code Division Multiple Access (CSK/CDMA) ALOHA is expected to improve the throughput in advanced wireless network, such as sensor networks and ad-hoc networks. The throughput of the nonorthogonal CSK/CDMA ALOHA is expected to get better by introducing interference cancellation technique. It is not clear how much the throughput improved by introducing interference canceler. This paper presents the throughput performance of the nonorthogonal CSK/CDMA ALOHA with interference canceler by theoretical analysis. Consequently, it is found that the throughput performance of our system is over 1.0. It is also found that the throughput performance shows more than 295 % increase by using the interference canceler when Eb/No is high.