Improved phase factor computation for the PAR reduction of an OFDM signal using PTS

Tellambura, C.

doi:10.1109/4234.917092

Cited by 146 publications

(56 citation statements)

References 6 publications

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“…12, which compares the performance of the IHS-PTS technique with T-PTS [10], OPTS [24], Tabu-PTS [14], FF-PTS [15], HS-PTS [17], and ABC-PTS [13] with 16-QAM modulation. This implies that the IHS-based PTS technique exhibits better PAPR reduction performance when compared with other existing evolutionary optimization techniques for the same or almost the same search complexity.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

“…The T-PTS technique requires all combinations of allowed phase factors for an optimum exhaustive search [10], which leads to an exponential rise in the number of subblocks. Subblock partitioning is another factor that affects the PAPR, which is a method of dividing subbands into multiple disjoint subblocks.…”

Section: Traditional Partial Transmit Sequence Techniquementioning

confidence: 99%

“…In T-PTS, the exhaustive search space for an optimal phase factor increases exponentially with the number of subblocks [10]. The increase in the search space leads to an increased computational complexity.…”

Section: Introductionmentioning

confidence: 99%

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Partial Transmit Sequence Optimization Using Improved Harmony Search Algorithm for PAPR Reduction in OFDM

Singh¹,

Patra²

2017

ETRI Journal

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This paper considers the use of the Partial Transmit Sequence (PTS) technique to reduce the Peak-toAverage Power Ratio (PAPR) of an Orthogonal Frequency Division Multiplexing signal in wireless communication systems. Search complexity is very high in the traditional PTS scheme because it involves an extensive random search over all combinations of allowed phase vectors, and it increases exponentially with the number of phase vectors. In this paper, a suboptimal metaheuristic algorithm for phase optimization based on an improved harmony search (IHS) is applied to explore the optimal combination of phase vectors that provides improved performance compared with existing evolutionary algorithms such as the harmony search algorithm and firefly algorithm. IHS enhances the accuracy and convergence rate of the conventional algorithms with very few parameters to adjust. Simulation results show that an improved harmony search-based PTS algorithm can achieve a significant reduction in PAPR using a simple network structure compared with conventional algorithms.

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Section: Simulation Results and Discussionmentioning

confidence: 99%

Section: Traditional Partial Transmit Sequence Techniquementioning

confidence: 99%

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Partial Transmit Sequence Optimization Using Improved Harmony Search Algorithm for PAPR Reduction in OFDM

Singh¹,

Patra²

2017

ETRI Journal

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“…Among them, schemes like phase optimization (Nikookar & Lidsheim, 2002), constellation shaping (Kou et al, 2007), selective mapping (SLM) (Lim et al, 2005), nonlinear companding transforms (Jiang et al, 2006), tone reservation (TR), tone injection (TI) (Mourelo., 1999;Yoo et al, 2006), partial transmit sequence (PTS) (Han & Lee, 2004;Müller & Huber, 1997;Cimini & Sollenberger, 2000;Tellambura, 2001), clipping and filtering (Wang & Tellambura, 2005;Li & Cimini, 1998;Nee & Wild, 1998), precoding based techniques (Slimane, 2007;Min & Jeoti, 2007;Baig & Jeoti, 2010a, 2010b, 2010c, precoding based selective mapping (PSLM) techniques (Baig & Jeoti, 2010a, 2010b and phase modulation transform (Tasi et al, 2006;Thompson et al, 2008) are popular. The precoding based techniques, however, show great promise as they are simple linear techniques to implement without the need of any side M T( ) .…”

Section: Literature Reviewmentioning

confidence: 99%

“…PTS is another very popular PAPR reduction technique (Han & Lee, 2004;Müller & Huber, 1997;Cimini & Sollenberger, 2000;Tellambura, 2001). In this technique, the input data block of N symbols is partitioned into disjoint sub-blocks.…”

Section: Partial Transmit Sequence (Pts)mentioning

confidence: 99%