Prasit Prapinmongkolkarn

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Wireless local area networks (WLANs), WiMAX, and wireless personal area networks (WPANs) are currently being deployed in the same unlicensed radio frequency bands. In these bands, within and between some of these systems, interference becomes a major issue. Interference investigations from a wide variety of wireless systems are hard to perform. In this(More)
In this paper, a novel chip shaping being used in a particular DSCDMA was addressed. The chip shaping is created by superpositioning of N/2 carriers in a typical interferometry-pattern chip shaping. The parliicular DS-CDMA refers to as a DS-CDMA whose users are separated into two groups with the maximum number of users in each group being N/2. The result(More)
In this paper, a new video analysis and background modeling suitable for wireless video surveillance networks is proposed. Using video analysis, the proposed system can detect any location of important information from the video data, e.g., the location of persons, and then the whole video data can be drastically reduced by using background modeling except(More)
The NTC has contracted Chula UniSearch, a consulting arm of Chulalongkorn University (CU), led by Dr. Supavadee Aramvith and Dr. Chaodit Aswakul, to operate the project which is participated by CAT Telecom, Samart Telecom, AIS, NEC, Rohde&Schwarz, FORTH and ADC Communications. NGN technologies such as 3G, Wi-Max, VoIP, SIP server/Soft switch, VoD and FTTH(More)
In order to provide equal telecommunications access to villages, schools and health centers in remote areas, various innovative broadband models have recently been developed jointly by operators and Thailand's National Telecommunications Commission (NTC), using the capacity demand sharing IP-based broadband communication technique. This paper presents and(More)