Boonsrimuang, Pisit

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Boonsrimuang, Pisit
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Boonsrimuang, P.
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pisit.bo@kmitl.ac.th

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    A PAPR Reduction for FBMC-OQAM Signals using ABC-OPTS Scheme
    (2019-04-29)
    Boontra, Pitchaya
    ;
    Mata, Tanairat
    ;
    Dataesatu, Arif
    ;
    Mori, Kazuo
    ;
    Boonsrimuang, Pisit
    Partial Transmit Sequence (PTS) scheme has been applied to the OFDM signal for solving the high PAPR problem which can achieve better PAPR performance. However, because of the structure of the FBMC-OQAM signal which is different from the OFDM signal, the PTS scheme is not suitable for the FBMC-OQAM signal. For this reason, this paper considers the PAPR reduction for FBMC-OQAM signal. This paper proposes an overlapped PTS (OPTS) with Artificial Bee Colony (ABC) algorithm. The silent features are to improve the PAPR by modifying the PTS scheme as OPTS scheme and less computational complexity in the PAPR optimization process by using the ABC algorithm. The PAPR reduction effectiveness of the proposed method has been confirmed by the simulation results in the paper.
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    A PAPR reduction scheme based on improved PTS with ABC algorithm for OFDM signal
    (2018-07-02)
    Mata, Tanairat
    ;
    Boonsrimuang, Pisit
    ;
    Boontra, Pitchaya
    A high PAPR is well known as the serious problem of OFDM system because of a huge degradation of its signal quality, especially in the non-linear channel. From the reason, many PAPR reduction schemes have been proposed for solving this problem. The Partial Transmit Sequence (PTS) scheme is one of the PAPR reduction schemes which can improve the PAPR performance effectively. However, its computational complexity would be increased which is proportional to the increasing number of symbol clusters in the optimum PAPR value for a PAPR reduction process. To solve this problem, this paper proposes the PAPR reduction scheme based on the improved PTS with Artificial Bee Colony (ABC) algorithm for OFDM system. The potential capability of the proposed scheme is the PAPR reduction performance with low computational complexity which leads to the improvement of signal quality in the OFDM system. The excellent PAPR reduction performance with the low computational complexity of the proposed scheme has been verified by the computer simulations in this paper.
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    A low-complexity PAPR reduction for space-time block code MIMO-OFDM by using modified-PTS with ABC-concurrent algorithm
    (2020-01-01)
    Boontra, Pitchaya
    ;
    Mata, Tanairat
    ;
    Boonsrimuang, Pisit
    One of the problems of using Orthogonal Frequency Division Multiplexing (OFDM) technique is the higher Peak-to-Average Power Ratio (PAPR) which leads to the fatal degradation of the system performance in the non-linear channel. To solve this problem, the partial transmit sequence (PTS) was proposed for Space-Time Block Code (STBC) with Multi-Input and Multi-Output (MIMO)-OFDM as STBC MIMO-OFDM system which can reduce the PAPR effectively. However, its complexity in the PAPR reduction process becomes higher in proportion to the increase of its considered cluster number. To solve this problem, this paper proposes a low-complexity PAPR reduction by using the modified-PTS with artificial bee colony (ABC) and concurrent algorithm as ABC-Concurrent algorithm for STBC MIMO-OFDM system which can improve better PAPR with low-complexity and can perform better Bit-Error-Rate (BER) in the non-linear channel. The silent features of the proposed modified-PTS with ABCConcurrent algorithm are to reduce the PAPR with decreasing side information (SI) to half by modifying PTS with the concurrent algorithm and to reduce the complexity in PAPR reduction process by applying ABC algorithm for STBC MIMO-OFDM system. From the various results by using computer simulation, it can be confirmed that the proposed modified-PTS with ABC-Concurrent algorithm can reduce PAPR by approximately 3.4 and 0.4 dB at CCDF 10<sup>-3</sup> as comparing with the original STBC MIMO-OFDM and conventional PTS methods respectively, and can use the complexity approximately only 19% in PAPR reduction process which is decreased a lot from using the conventional PTS method. Moreover, the proposed method can perform the better BER in the non-linear channel than the original STBC MIMO-OFDM and the conventional. PTS methods which is close to that of operating in nonlinear channel.