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Author: search.filters.author.Anunvrapong, Pramote

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    Applications behavior of coexistence LTE-FDD/TDD
    (2019-11-01)
    Moungnoul, Phichet
    ;
    Srakupan, Wathana
    ;
    Anunvrapong, Pramote
    This paper was studied about an application behavior of coexistence LTE-TDD and LTE-FDD networks, which used by network provider for optimal the capacity of networks. The results shown bandwidth, packets size and type of protocols are affected the system throughput. The power allocation and guard band techniques are improve the behavior of coexistence network by 30%.
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    Load sharing technique for coexistence LTE-FDD and LTE-TDD
    (2019-07-01)
    Thongrak, Apichata
    ;
    A-Mapat, Narongchon
    ;
    Moungnoul, Phichet
    ;
    Anunvrapong, Pramote
    Mobile network Operator is implemented coexistence LTE-TDD and LTE-FDD network, this technique used to improve the system capacity. The adjacent cell interference or ACI caused by these coexisting networks, which affected to the network performance. This paper investigates the load sharing technique to optimal the capacity of coexistence LTE network. Results show 4:6 of FDD and TDD user ratio that give maximum system throughput and comparing with power allocation and guard band technique will describe in this paper.
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    An efficient uplink OFDMA channel estimation under high-speed mobile environment
    (2017-11-03)
    Aiempo, Pimracha
    ;
    Boonsrimuang, Pisit
    ;
    Mata, Tanairat
    ;
    Anunvrapong, Pramote
    OFDMA (Orthogonal Frequency Division Multiple Access) was known extensively for operating in various mobile communication systems. In OFDMA system, there are two parts of communication link, uplink which the uplink OFDMA is considered in this paper, and downlink. In uplink OFDMA communication, all users send their information signals to base station at the same time. Each channel between user and base station requires to be estimated from the combined received signals at base station. From this reason, this paper proposes a channel estimation method for actual uplink OFDMA system which N points IFFT/FFT is larger than M data subcarriers (N>M) which can provide more accuracy for channel estimation. In the computer simulation results, the normalized mean square error (NMSE) performance is evaluated for the channel estimation accuracy under high-speed mobile environment. There is 12dB gain at 10<sup>-1</sup> of NMSE for the proposed method over the conventional method as shown in the result.
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    Comparison between measurement and prediction propagation model for PCT system
    (2005-12-01)
    Moungnoul, Phichet
    ;
    Kanthanan, Piroge
    ;
    Paungma, Tawil
    ;
    Anunvrapong, Pramote
    This paper presents the results of propagation measurement for PCT cell station coverage area. The results are compared with most known coverage prediction model. The UTD model is appropriate for cell station installation design. © 2005 IEEE.