A New Selected Mapping Scheme without Additional IFFT Operations in OFDM Systems
- Title
- A New Selected Mapping Scheme without Additional IFFT Operations in OFDM Systems
- Author
- 박상규
- Keywords
- Peak to average power ratio; Computational complexity; Partial transmit sequences; Consumer electronics; Frequency modulation
- Issue Date
- 2011-11
- Publisher
- Institute of Electrical and Electronics Engineers
- Citation
- IEEE Transactions on Consumer Electronics, 2011. 11, 57권, 4호, 1513-1518
- Abstract
- Selected mapping (SLM) is an efficient peak-to-average power ratio (PAPR) reduction scheme without signal distortion in orthogonal frequency division multiplexing (OFDM) systems. Therefore, it can be applied to mobile consumer electronics that are sensitive to high PAPR because of the limitation of the linear area of a power amplifier. However, enormous inverse fast Fourier transforms (IFFTs) are needed for the sufficient PAPR reduction performance, which cause the mobile devices with SLM scheme to become quite complex and reduce battery power consumption. In this paper, we propose a new SLM scheme that replaces the additional IFFT operations with a conversion of the other candidate OFDM signal. Simulation results show that the proposed scheme significantly reduces the computational complexity, while it obtains the better PAPR reduction performance than the dummy sequence insertion (DSI)-partial transmit sequence (PTS) scheme(1).
- URI
- http://ieeexplore.ieee.org/document/6131119/
- ISSN
- 0098-3063
- DOI
- 10.1109/TCE.2011.6131119
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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