Combining of cyclically delayed signals: A low-complexity scheme for PAPR reduction in OFDM systems

Jin Soo Wang; Ji Hye Lee; Jae Cheol Park; Iickho Song; Yun Hee Kim

doi:10.1109/TBC.2010.2060174

Combining of cyclically delayed signals: A low-complexity scheme for PAPR reduction in OFDM systems

Jin Soo Wang
, Ji Hye Lee
, Jae Cheol Park
, Iickho Song
, Yun Hee Kim

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

Based on superposition of signals in the time domain, we propose a new low-complexity scheme for the reduction of the peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. The proposed scheme first generates signal candidates by combining an OFDM signal and its cyclically delayed versions with different delays and phases, and then selects the candidate signal with minimum PAPR. It is shown that the complexity of the proposed scheme is significantly lower than that of the selective mapping (SLM) at the cost of some degradation in the bit error rate (BER) performance and, at similar PAPR and coded BER performance, is lower than that of the low-complexity SLM proposed recently.

Original language	English
Article number	5549958
Pages (from-to)	577-583
Number of pages	7
Journal	IEEE Transactions on Broadcasting
Volume	56
Issue number	4
DOIs	https://doi.org/10.1109/TBC.2010.2060174
Publication status	Published - Dec 2010

Bibliographical note

Funding Information:
Manuscript received October 01, 2009; revised June 01, 2010; accepted July 06, 2010. Date of publication August 16, 2010; date of current version November 19, 2010 This work was supported by the National Research Foundation of Korea, with funding from the Ministry of Education, Science, and Technology, under Grant 2010-0015175 and by the Information Technology Research Center (ITRC) Program of National IT Industry Promotion Agency, with funding from the Ministry of Knowledge Economy, under Grant NIPA-2010-C1090-1021-0007.

Keywords

Cyclically delayed signal
linear combining
orthogonal frequency division multiplexing
peak-to-average power ratio

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10.1109/TBC.2010.2060174

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title = "Combining of cyclically delayed signals: A low-complexity scheme for PAPR reduction in OFDM systems",

abstract = "Based on superposition of signals in the time domain, we propose a new low-complexity scheme for the reduction of the peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. The proposed scheme first generates signal candidates by combining an OFDM signal and its cyclically delayed versions with different delays and phases, and then selects the candidate signal with minimum PAPR. It is shown that the complexity of the proposed scheme is significantly lower than that of the selective mapping (SLM) at the cost of some degradation in the bit error rate (BER) performance and, at similar PAPR and coded BER performance, is lower than that of the low-complexity SLM proposed recently.",

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AU - Song, Iickho

AU - Kim, Yun Hee

N1 - Funding Information: Manuscript received October 01, 2009; revised June 01, 2010; accepted July 06, 2010. Date of publication August 16, 2010; date of current version November 19, 2010 This work was supported by the National Research Foundation of Korea, with funding from the Ministry of Education, Science, and Technology, under Grant 2010-0015175 and by the Information Technology Research Center (ITRC) Program of National IT Industry Promotion Agency, with funding from the Ministry of Knowledge Economy, under Grant NIPA-2010-C1090-1021-0007.

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N2 - Based on superposition of signals in the time domain, we propose a new low-complexity scheme for the reduction of the peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. The proposed scheme first generates signal candidates by combining an OFDM signal and its cyclically delayed versions with different delays and phases, and then selects the candidate signal with minimum PAPR. It is shown that the complexity of the proposed scheme is significantly lower than that of the selective mapping (SLM) at the cost of some degradation in the bit error rate (BER) performance and, at similar PAPR and coded BER performance, is lower than that of the low-complexity SLM proposed recently.

AB - Based on superposition of signals in the time domain, we propose a new low-complexity scheme for the reduction of the peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. The proposed scheme first generates signal candidates by combining an OFDM signal and its cyclically delayed versions with different delays and phases, and then selects the candidate signal with minimum PAPR. It is shown that the complexity of the proposed scheme is significantly lower than that of the selective mapping (SLM) at the cost of some degradation in the bit error rate (BER) performance and, at similar PAPR and coded BER performance, is lower than that of the low-complexity SLM proposed recently.

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Combining of cyclically delayed signals: A low-complexity scheme for PAPR reduction in OFDM systems

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Keywords

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