使用錯誤更正碼以降低OFDM的峰均值功率比及錯誤率之研究(2/3)
Date Issued
2005-07-31
Date
2005-07-31
Author(s)
DOI
932213E002040
Abstract
OFDM has been popularly applied to many
modern communication systems. However, one of the
major disadvantages is the inherent high
peak-to-average power ratio (PAPR). We propose a
new PAPR reduction scheme for OFDM systems. The
idea is to reduce PAPR and control clipping distortion
simultaneously. The procedure includes setting a
proper distortion bound and recursive operations of
clipping, filtering and distortion control. The
proposed scheme can achieve significant PAPR
reduction while maintaining low error rate. For this
scheme, PAPR reduction is obtained without any
redundancy and no side information is needed. Hence,
OFDM systems using this scheme do not pay the
price of the reduction of transmission rate. The
OFDM receiver can work as usual without any
change. This is of extra benefits to DAB/DVB
applications.
Subjects
OFDM
peak-to-average power ratio
recursive clipping and filtering
Publisher
臺北市：國立臺灣大學電信工程學研究所
Type
report
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932213E002040.pdf
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1.19 MB
Format
Adobe PDF
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