Block Type Pilot Protection Technique for Clipping in OFDM Systems

One of the drawbacks in an OFDM system is the high peak to average power ratio (PAPR). Among a number of techniques to reduce the high PAPR, clipping is the simplest and most easily implementable method. Clipping introduces the clipping noise, which affects pilot data as well as information data. As...

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Bibliographic Details
Published in:	The 9th International Conference on Advanced Communication Technology Vol. 1; pp. 844 - 847
Main Authors:	Jeong-Sang Park, Jae-Kwon Lee, Jin-Up Kim
Format:	Conference Proceeding
Language:	English
Published:	IEEE 01-02-2007
Subjects:	Bit error rate Block type pilot Channel estimation Clipping noise Fading Noise cancellation Noise level Noise robustness Nonlinear distortion OFDM Peak to average power ratio Power system protection PRBS
Online Access:	Get full text
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Summary:	One of the drawbacks in an OFDM system is the high peak to average power ratio (PAPR). Among a number of techniques to reduce the high PAPR, clipping is the simplest and most easily implementable method. Clipping introduces the clipping noise, which affects pilot data as well as information data. As a result, the performance of channel estimation and system decreases due to a nonlinear distortion process. In this paper, the proposed block type pilot protection technique for clipping has the properties, such as distortionless pilot and no side information. And simulation results indicate that the proposed scheme has better BER performance and its complexity decreases.
ISBN:	8955191316 9788955191318
ISSN:	1738-9445
DOI:	10.1109/ICACT.2007.358481