Utilization of Null Subcarriers for PAPR Reduction in 3GPP LTE Downlink
- Title
- Utilization of Null Subcarriers for PAPR Reduction in 3GPP LTE Downlink
- Author
- 박상규
- Keywords
- Peak to average power ratio; Downlink; Bandwidth; Modulation; Mobile communication; Degradation; Long term evolution; Orthogonal frequency; division multiple access; Dummy sequence insertion
- Issue Date
- 2012-09
- Publisher
- IEEE
- Citation
- IEEE International Conference on Network Infrastructure and Digital Content Network Infrastructure and Digital Content, Sep 2012, P.54-56
- Abstract
- The multiple access scheme for the long term evolution (LTE) physical layer is based on Orthogonal Frequency Division Multiple Access (OFDMA) in the downlink. The main drawback of OFDMA is the peak-to-average power ratio (PAPR) problem. Dummy sequence insertion (DSI) concept can be an efficient PAPR reduction method for the LTE downlink system because it is very simple to implement and side information is not needed. However, the DSI has to sacrifice a decrease in the transmitted data rate for a large number of dummy subcarriers. In this paper, a novel approach to the DSI concept is proposed for complete application to an LTE system. For effective utilization of physical resources, the unused space of the LTE system is calculated, and dummy subcarriers are inserted into the unused space. Therefore, there is no degradation in transmitted data rate. Simulation results show that the proposed method can reduce PAPR considerably without degradation of bit error rate (BER) performance as a LTE downlink system.
- URI
- http://ieeexplore.ieee.org/document/6418710/http://hdl.handle.net/20.500.11754/65949
- ISBN
- 978-1-4673-2201-0; 978-1-4673-2203-4; 978-1-4673-2204-1
- ISSN
- 1326-4173
- DOI
- 10.1109/ICNIDC.2012.6418710
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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