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Low-Complexity PTS Schemes Using Dominant Time-Domain Samples in OFDM Systems

Title
Low-Complexity PTS Schemes Using Dominant Time-Domain Samples in OFDM Systems
Author
신동준
Keywords
Low complexity; orthogonal frequency division multiplexing (OFDM); partial transmit sequence (PTS); peak-to-average power ratio (PAPR)
Issue Date
2017-06
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE TRANSACTIONS ON BROADCASTING, v. 63, no. 2, page. 440-445
Abstract
Partial transmit sequence (PTS) is a probabilistic peak-to-average power ratio (PAPR) reduction scheme for orthogonal frequency division multiplexing (OFDM) signals, but it requires an exhaustive search for the one with the minimum PAPR over all alternative OFDM signal vectors. In order to reduce such computational complexity, it was proposed that the PAPR value of each alternative OFDM signal vector is approximately estimated by using dominant time-domain samples selected based on a simple metric. In this paper, two new effective metrics for selecting dominant time-domain samples are proposed for low-complexity PTS scheme. For further lowering the computational complexity, two low-complexity PTS schemes are proposed by sorting the dominant time-domain samples in decreasing order of their metric values. Simulation results confirm that compared with the conventional PTS scheme, the proposed PTS schemes show identical PAPR reduction performance with substantially reduced computational complexity.
URI
https://ieeexplore.ieee.org/document/7866006https://repository.hanyang.ac.kr/handle/20.500.11754/114579
ISSN
0018-9316; 1557-9611
DOI
10.1109/TBC.2017.2662228
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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