A low complexity peak-to-average power ratio reduction scheme based on selected mapping and radix-II IFFT in OFDM systems

Because of its lack of feedback process and the simplicity of its searching algorithm, conventional selected mapping (CSLM) is an efficient peak-to-average power ratio (PAPR) reduction technique in orthogonal frequency division multiplexing systems compared to the present techniques such as partial...

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Bibliographic Details
Published in:Telecommunication systems 2018, Vol.67 (1), p.21-30
Main Authors: Kazemian, Mohsen, Varahram, Pooria, Hashim, S. J., Ali, Borhanuddin M., Farrell, Ronan
Format: Article
Language:English
Subjects:
Artificial Intelligence
Business and Management
Complexity
Computer Communication Networks
Computer simulation
Fast Fourier transformations
Fourier transforms
IT in Business
Mapping
Orthogonal Frequency Division Multiplexing
Probability Theory and Stochastic Processes
Reduction
Simulation
Telecommunications systems
Wave division multiplexing
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Summary:Because of its lack of feedback process and the simplicity of its searching algorithm, conventional selected mapping (CSLM) is an efficient peak-to-average power ratio (PAPR) reduction technique in orthogonal frequency division multiplexing systems compared to the present techniques such as partial transmit sequence and active constellation extension. The requirement for large numbers of inverse fast Fourier transform (IFFT) blocks to provide desired PAPR reduction performance is introduced as the most significant drawback of the CSLM. This paper uses the special structure of an N-point radix-II IFFT in the CSLM and proposes a low complexity method to reduce the redundant calculations with almost the same PAPR reduction, bit-error rate, and power spectral density performances as those of the CSLM. The simulation results show that the computational complexity is reduced by at least 46.8% compared to that of the CSLM with approximately the same PAPR performance.
ISSN:1018-4864
1572-9451
DOI:10.1007/s11235-017-0312-5