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PAPR Reduction in FBMC-OQAM Systems Using Trellis-based D-SLM with ABC Algorithm
(2020-06-01)
Jirajaracheep, Panya
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Mata, Tanairat
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Boonsrimuang, Pisit
For the next age of mobile and wireless communications systems. Filter bank multicarrier conjunction with offset quadrature amplitude modulation (FBMC-OQAM) is the non-orthogonal multicarrier modulation techniques, which is mention as an essential and prominent player. It has several advantages, such as higher spectral efficiency, as compared to the traditional methods. Nevertheless, FBMC-OQAM still has a critical weakness similar to OFDM system, which is a high peak-to-average power ratio (PAPR) at the transmitter. There are several varieties of the technique presented to defeat the severe PAPR issue. The Trellis-based D-SLM technique is presented to employ and achieve a significantly improve PAPR curtailment performance. However, The Trellis-based method still has a limitation of its high computational complexity. This study presents the Trellis-based D-SLM scheme with artificial bee colony (ABC) phase optimization, which achieves lower computational complexity. The results of PAPR performance evaluation through computer simulation, the proposed technique can deliver a performance of PAPR reduction similar to the conventional Trellis-based D-SLM technique, but the proposed technique requires around 10% computation complexity of the conventional technique.
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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
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Mata, Tanairat
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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.
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Proposal of sub-optimum algorithm for trellis-based SLM reducing PAPR of FBMC-OQAM signals
(2018-05-30)
Rujiprechanon, Latthawit
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Boonsrimuang, Pisit
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Sanpan, Sunisa
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Boonsrimuang, Pornpawit
Filter bank multi-carrier with offset quadrature amplitude modulation (FBMC-OQAM) has several advantages. FBMC-OQAM is considered a major candidate for the next generation mobile communication systems. The high peak-to-average power ratio (PAPR) is one of disadvantage for FBMC-OQAM signal which could be solved by the Trellis-based SLM (TSLM) technique. This TSLM technique has a much better PAPR reduction performance. However, the trellis-based algorithm has high computational complexity. This paper proposes the sub-optimum algorithm for trellis-based SLM scheme. The proposed algorithm show much lower computational complexity than trellis-based SLM scheme with small degradation of PAPR reduction performance. On the other hand, the PAPR reduction performance of proposed algorithm shows better than conventional SLM with similar computational complexity when the number of L symbols is large. The efficiencies of proposed scheme were verified by using various computer simulations.
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PAPR reduction in FBMC-OQAM signals with half complexity of trellis-based SLM
(2018-03-23)
Jirajaracheep, Panya
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Sanpan, Sunisa
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Boonsrimuang, Pornpawit
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Boonsrimuang, Pisit
The filter Bank Multicarrier (FBMC) modulation with offset-QAM (OQAM) has attracted attention as a major candidate for future wireless communication systems which has several advantages. A disadvantage of FBMC-OQAM is high peak-to-average power ratio (PAPR). To overcome this problem, the trellis-based SLM technique is employed and achieved a much better PAPR reduction performance. However, The Trellis-based algorithm has also the intrinsic disadvantage of high computational complexity, to decreasing the complexity will make the system more desirable. This paper proposes the half-complexity algorithm for trellis-based SLM scheme which achieves lower computational complexity when compared to trellis-based SLM scheme with small degradation of PAPR reduction performance. From various simulation results, the proposed algorithm shows less computational complexity about 50% compared to the trellis-based algorithm with similar PAPR reduction performance.
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Improved PTS method with new weighting factor technique for FBMC-OQAM systems
(2017-03-29)
Hanprasitkum, Amnart
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Numsomran, Arjin
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Boonsrimuang, Pornpawit
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Boonsrimuang, Pisit
Filter bank multi-carrier (FBMC) with offset quadrature amplitude modulation (OQAM) has been regarded as one of the candidates for next generation broadband wireless communication systems. Similar to OFDM systems, one of the major drawbacks in FBMC-OQAM systems is high peak-to-average power ratio (PAPR). To overcome this problem, Partial Transmit Sequence (PTS) method is a well - known method which can reduce the peak-to-average ratio (PAPR) for a multicarrier modulation signal. The PTS method can improve PAPR reduction performance very well as increasing the number of predetermined discrete phase factors and number of clusters. However, the side information is proportioned increasing as increased number of predetermined discrete phase factors or/and clutters that it is required to inform to the receiver for recovering the original data. In this paper, we propose the new discrete phase factor pattern which can improved the PAPR reduction performance better than conventional PTS method. This paper presents various computer simulation results to verify the effectiveness of proposed method.
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Proposal of PAPR reduction method for OFDM signal by re-ordering of clusters
(2013-01-01)
Mata, Tanairat
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Naito, Katsuhiro
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Mori, Kazuo
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Kobayashi, Hideo
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Boonsrimuang, Pisit
One of the major disadvantages of OFDM technique is the high PAPR in the time domain signal. The larger PAPR signal would cause the fatal degradation of BER performance and un-desirable spectrum regrowth in the nonlinear channel. One of the promising PAPR reduction methods is the Partial Transmit Sequence (PTS) method which can achieve better PAPR performance with reasonable computation complexity. But the PTS method is required to inform the side information to the receiver for the correct demodulation of data information by using the separate channel. To solve the above problem, this paper proposes a new PAPR reduction method without requiring the separate channel. The salient feature of the proposed method is to reduce the PAPR performance by reordering of clusters in the frequency domain at the transmitter and reconstructing the clusters by using the cluster ID under embedded in the data information at the receiver. The proposed method can achieve almost the same PAPR performance and computation complexity as those for the PTS method without requiring the transmission of side information. This paper presents various computer simulation results to verify the effectiveness of the proposed method. © 2013 IEEE.
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A low complexity IPTS-based extended split-radix IFFT for PAPR reduction in OFDM systems
(2012-10-02)
Boonsrimuang, Pornpawit
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Jirajaracheep, Panya
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Reangsuntea, Pongsathorn
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Boonsrimuang, Pisit
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Kobayashi, Hideo
The Partial Transmit Sequence (PTS) method with low computation complexity, called decomposition PTS sub-blocking was proposed which employs the radix-2 inverse fast Fourier transform (IFFT) for the signals at the middle stages of an N-point radix-2 IFFT and decimation in frequency (DIF) domain. This method (DIF-IFFT) can reduce the computation complexity relatively with keeping the better PAPR performance similar to other PTS techniques with using the same weighting factor. To improve computation complexity for the PTS method, the Extended Split-Radix inverse fast Fourier transform (SRIFFT) which can reduces the number of computation complexity was proposed. However, the PAPR reduction performance is the same as that for the radix-2 method. In this paper, we propose a new weighting factor technique in conjunction with DIF-PTS sub-blocking based on Extended Split-Radix IFFT technique called Improve PTS (I-PTS) which can improve both the PAPR performance and computation complexity without any increasing of side information. This paper presents the various computer simulation results to verify the effectiveness of proposed method. © 2012 IEEE.
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Proposal of new PAPR reduction method for OFDM signal by using permutation sequences
(2012-05-09)
Boonsrimuang, Pornpawit
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Limwattanachai, Kanchana
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Boonsrimuang, Pisit
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Kobayashi, Hideo
Many PAPR reduction techniques for OFDM signal have been proposed up to today, which can be classified into two major methods as the distortion and distortion-less methods. The most of distortion-less methods show better PAPR performance without degradation of BER performance. This paper proposes a novel distortion-less PAPR reduction method which employs the permutation sequence in the frequency domain with embedded side information. The feature of proposed method is to achieve the better PAPR performance with very few side information for the correct demodulation of data information at the receiver. This paper presents various computer simulation results to verify the effectiveness of proposed method as comparing with the conventional OFDM method in the non-linear channel. © 2012 GIRI.
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A new weighting factor of PTS OFDM with low complexity based on Split-Radix IFFT for PAPR reduction
(2012-05-09)
Boonsrimuang, Pornpawit
;
Reangsuntea, Pongsathorn
;
Boonsrimuang, Pisit
;
Kobayashi, Hideo
The Partial Transmit Sequence (PTS) method with low computation complexity, called decomposition PTS sub-blocking was proposed which employs the radix-2 inverse fast Fourier transform (IFFT) for the signals at the middle stages of an N-point radix-2 IFFT and decimation in frequency (DIF) domain. This method (DIF-IFFT) can reduce the computation complexity relatively with keeping the better PAPR performance similar to other PTS techniques with using the same weighting factor. To improve computation complexity for the PTS method, the Split-Radix inverse fast Fourier transform (SRIFFT) which can reduces the number of complex computation was proposed. However, the PAPR reduction performance is the same as that for the radix-2 method. In this paper, we propose a new weighting factor technique in conjunction with DIF-PTS sub-blocking based on Split-Radix IFFT technique called Improve PTS (I-PTS) which can improve both the PAPR performance and computation complexity without any increasing of side information. This paper presents the various computer simulation results to verifier the effectiveness of proposed method. © 2012 GIRI.
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Peak-to-average power ratio reduction method for OFDM signal by using permutation sequences
(2011-12-01)
Boonsrimuang, Pornpawit
;
Kobayashi, Hideo
;
Limwattanachai, Kanchana
;
Boonsrimuang, Pisit
Many PAPR reduction techniques for OFDM signal have been proposed up to today, which can be classified into two major methods as the distortion and distortion-less methods. The most of distortion-less methods show better PAPR performance without degradation of BER performance. This paper proposes a novel distortion-less PAPR reduction method which employs the permutation sequence in the frequency domain with embedded side information. The feature of proposed method is to achieve the better PAPR performance with very few side information for the correct demodulation of data information at the receiver. This paper presents various computer simulation results to verify the effectiveness of proposed method as comparing with the conventional OFDM method in the non-linear channel. © 2011 IEEE.

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