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Author: search.filters.author.Bunlaksananusorn, ChaninSubject: search.filters.subject.UWB

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    UWB Transmission Waveform Application for in an Indoor Localization System
    (2024-01-01)
    Mankong, Thanadon
    ;
    Promwong, Sathaporn
    ;
    Bunlaksananusorn, Chanin
    Nowadays, the indoor localization systems had been widely utilized. The popular use of localization system is the global position system (GPS). However, the system fails in particular environments such as indoors because low received signal power. It is not appropriate to take a position. The indoor localization system was used to assist in finding a position in an indoor environment. There are several techniques used to evaluate. Technique trilateration model is a technique of geometric. This technique leverages circular intersections to estimate target positions. The circles are derived from a set of reference positions. This paper studies on indoor positioning in line of sight (LOS) using by IEEE 802.15.4 standard in ultra wideband option which this study employs trilateration to estimate the position of target objects. Biconical antennas with vertical polarization serve as both transmitting and receiving elements. The evaluation is conducted using a vector network analyzer (VNA) across a frequency range of 3GHz to 11GHz. The positioning accuracy will be assessed in terms of distance error.
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    A Study of Low Band UWB Localization with Wooden and Metal Bookshelves Based on Measurement Data
    (2024-01-01)
    Mankong, Thanadon
    ;
    Promwong, Sathaporn
    ;
    Bunlaksananusorn, Chanin
    This paper considers the potential of Impulse-Radio Ultra-Wideband (IR-UWB) technology which can be a barcodes replacement in bookshelf management systems. To assess its feasibility, we analyze IR-UWB propagation characteristics within bookshelf environments, particularly focusing on the impact of wooden and metal structures. A measurement-based evaluation scheme is employed, utilizing a vector network analyzer (VNA) alongside microstrip patch antennas for both the transmitter (Tx) and receiver (Rx) operating within a frequency range of 3.2GHz to 4.8GHz. The path loss, received signal strength (RSS), and cumulative distribution function (CDF) of the measured data are then analyzed to evaluate the suitability of IR-UWB for bookshelf management applications. These findings will inform the design of IR-UWB antennas and the overall assessment of this technology in this specific context
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    Measurement and Investigation of HB-UWB Transmission Link for BAN System
    (2023-01-01)
    Sanguanpuak, Chanidaphar
    ;
    Promwong, Sathaporn
    ;
    Bunlaksananusorn, Chanin
    The short-range wireless multimedia is consider used a ultra wideband (UWB) technology for human body mobile and multimedia applications shows promise for wireless multi-media systems. Based on IEEE 802.15.6, wireless body area networks (BAN) require understanding the human body’s effects on channel characteristics. This paper presents how to evaluation of human body ulra-wideband (HB-UWB) transmission with line-of-sight and non-line-of-sight scenario. Our research aims to enhance HB-UWB channel propagation on the body media by employing with CLEAN algorithm to eliminate noise. This research leverage findings from previous studies to facilitate performance comparison. Furthermore, for analyze system performance using the CLEAN algorithm at different body positions. The measurement setup covers band the FCC regulated from 3.0 GHz to 11 GHz. It includes the tested with wideband antenna and vector network analyzer (VNA). HB-UWB characteristics are shows in the path loss and power delay profile are discussed as relevant parameters. This research very useful for design and evaluation of human body mobile network and wireless multimedia systems.
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    HB channel measurement and modeling in UWB for WBAN
    (2019-04-15)
    Sanguanpuak, Chanidaphar
    ;
    Bunlaksananusorn, Chanin
    ;
    Promwong, Sathaporn
    The combination of ultra-wideband and wireless human body application is a promising communication system for future wireless system in short range. In particular, wireless body area network is based on IEEE 802.15.6. Therefore, the effect with human body is very important to know a channel characterization. In this paper, the ling of sight and non-line of sight scenario have been presented. The measurement is coverage as a full-band of FCC regulation which is 3.1 GHz to 10.6 GHz and include the under test antenna and vector network analyzer is provided. In order to investigate some of parameter, path loss and power delay profile are discussion.
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    Distortion Analysis of the HB-UWB Transmission Waveform for WBAN Applications
    (2018-07-02)
    Sanguanpuak, Chanidaphar
    ;
    Bunlaksananusorn, Chanin
    ;
    Promwong, Sathaporn
    The body area network (BAN) is a wireless technology, which play an important role in very short range wireless communications and find a wide variety of applications such as WiMedia for relaying information gathered by biological sensors on body. The ultra wideband (UWB) technology is suitable for BAN system because of transmission by impulse radio and low power. However, signal distortion due to human body effect in human body-ultrawide band (HB-UWB) channel must be study. In this study, we evaluate HB-UWB channel which serious disturbed by the distortion. The distortion can cause extremely poor signal quality to wireless transmission channel even in free space because of the antenna characteristics and waveform distortion. Thus, the understanding of the effect from characterization of antenna and waveform effect is important. The measurement data of distortion analysis due the antenna and human body of HB-UWB for WBAN were presented in this research report. The receiver waveform template was present to maximize system signal to noise ration. The equation of Friis had been used to evaluate the results. The proposed method is practical for the HB-UWB evaluation, UWB antenna design, and provide more precision to identify the waveform distortion. The results can apply for the design of wireless medical devices which focus on the effect of human body.