Searching phase optimize in PTS-APPR method by GA for PAPR reduction in OFDM-WLAN systems

Pradabpet, Chusit; Yoshizawa, Shingo; Miyanaga, Yoshikazu; Dejhan, Kobchai

doi:10.1109/citisia.2009.5224175

Cited by 8 publications

(3 citation statements)

References 6 publications

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“…Hence, we try to make use of the introduced GA method [13] to reduce the achieved calculation complexity that found in [ll]which is given by [((1-1) N) + I] where N is the total number of the IFFT points and 1 is the width of the spread OFDM symbol. By making use of Partial Transmit Sequence (PTS)-GA work that found in [13,14], the work has been modified to fit the work of spreading the OFDM symbols as shown in Figure 4. GA is used here as a selection mechanism, which is finding the appropriate Pi that should be used to minimize the P APR of transmitted signal.…”

Section: Mimo-ofdm Radar System-based Ga Overviewmentioning

confidence: 99%

Enhancing the MIMO-OFDM Radar systems performance using GA

Daoud

Damati

Al-Sawalmeh

2010

2010 7th International Multi- Conference on Systems, Signals and Devices

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This paper proposes a new peak-to-average power ratio (PAPR) reduction method for a multiple-input multiple output (MIMO)-orthogonal frequency division multiplexing (OFDM) systems based on a genetic algorithm (GA). It has been introduced to be compatible with Radar systems, where the GA was used to optimize the MIMO-OFDM symbols in such way that could improve the system's performance. During this work, there was a comparison that has been stated among three systems; original radar system, radar system-based MIMO OFDM and radar system-based MIMO-OFDM uses GA. Finally, a range of simulation results are provided to demonstrate the superiority of the proposed scheme, since it is showed an enhancement in the coverage distance besides reducing the P APR effects.

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Section: Mimo-ofdm Radar System-based Ga Overviewmentioning

confidence: 99%

Enhancing the MIMO-OFDM Radar systems performance using GA

Daoud

Damati

Al-Sawalmeh

2010

2010 7th International Multi- Conference on Systems, Signals and Devices

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“…OFDM is adopted in various communication applications such as, digital video broadcasting (DVB), digital audio broadcasting (DAB) and wireless local area networks (WLAN) [2]. However, OFDM systems suffer from many of the problems such as sensitivity of carrier frequency offset and high peak-to-average power ratio (PAPR) [3].…”

Section: Introductionmentioning

confidence: 99%

Performance of PTS techniques with varied partition size in PAPR reduction of OFDM system

Ibraheem

Yaakob

Kadhim

et al. 2014

2014 International Conference on Computer, Communications, and Control Technology (I4CT)

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Orthogonal frequency division multiplexing (OFDM) is a promising modulation technique for transmitting large amounts of digital data through radio waves. One major drawback in OFDM communication is peak-to-average power ratio (PAPR). Mainly because of the nonlinearity of the high power amplifier, these results in high out-of-band radiation, inter-carrier interference, and bit error rate performance degradation. Partial transmit sequences (PTS), an attractive technique of PAPR reduction, provides significant PAPR reduction performance for (OFDM) signals. It essentially involves partitioning the OFDM data frame into disjoint subblocks. Adjacent partitioning (AP) scheme can be regarded as the best of the existing partitioning schemes when PAPR reduction performance and cost are considered together. In this paper, we study the impact of the size of PTS partitions on the performance through varying the size of the disjoint sub-blocks partition and comparing the PAPR reduction performance of three well known sub-block partitioning schemes namely Adjacent Partitioning (AP), Interleaved Partitioning (IP) and Pseudorandom Partitioning (PRP). Simulation results showed that performance of these PTS schemes largely depends on the chosen size of the partitions.Keywords-orthogonal frequency division multiplexing (OFDM), peak-to-average power ratio (PAPR), partial transmit sequences (PTS), sub-block partition scheme.

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“…Latter some researchers proposed a new scheme known as "Partial Transmit Sequence (PTS)" to reduce the PAPR of OFDM system sufficiently. In 2009 "PTS-APPR" method by Genetic Algorithm (GA) had been proposed [3]. In this method reduction of PAPR is done by using the hybrid of a Partial Transmit Sequence (PTS) and an Adaptive Peak Power Reduction (APPR) method with "genetic algorithm".…”

Section: Introductionmentioning

confidence: 99%

An Efficient Method for Papr Reduction in Ofdm Systems With Reduced Complexity

Kumari

Triar

2013

IJEEE

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Orthogonal Frequency Division Multiplexing (OFDM), widely used in digital wireless communication, has a major drawback of high Peak to Average Power Ratio (PAPR). A reduced complexity partial transmit sequence (PTS) scheme has been proposed to solve high peak to average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) system. In the proposed PTS scheme, a function is generated by summing the power of time domain samples at time ‘n’ in each sub blocks, known as “Hn”.Only those samples, having Hn greater than or equal to a preset threshold value (αT) are used for peak power calculation during the process of selecting a candidate signal with the lowest PAPR for transmission. As compared to conventional PTS scheme, the proposed scheme achieves almost the same PAPR reduction performance with much lower computational complexity.

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Searching phase optimize in PTS-APPR method by GA for PAPR reduction in OFDM-WLAN systems

Cited by 8 publications

References 6 publications

Enhancing the MIMO-OFDM Radar systems performance using GA

Enhancing the MIMO-OFDM Radar systems performance using GA

Performance of PTS techniques with varied partition size in PAPR reduction of OFDM system

An Efficient Method for Papr Reduction in Ofdm Systems With Reduced Complexity

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