A peak to average power ratio reduction scheme in ACO-OFDM system employing constant amplitude zero auto correlation and clipping

2016 ◽  
Author(s):  
Yongxia Li ◽  
Yufang Zhou ◽  
Enshun Kang ◽  
Tianshu Zhao
Keyword(s):  
Average Power ◽  
Power Ratio ◽  
Constant Amplitude ◽  
Reduction Scheme ◽  
Ofdm System ◽  
Auto Correlation ◽  
Power Ratio Reduction ◽  
Ratio Reduction

Peak-to-Average-Power Ratio Reduction Using Low-Complexity MIMO SFBC CI–OFDM System

2014 ◽  
Vol 80 (2) ◽  
pp. 571-580 ◽  
Author(s):  
B. Soma Sekhar ◽  
A. Mallikarjuna Prasad ◽  
K. Muralikrishna
Keyword(s):  
Average Power ◽  
Low Complexity ◽  
Power Ratio ◽  
Ofdm System ◽  
Power Ratio Reduction ◽  
Ratio Reduction

scholarly journals Transform Methods for the Reduction of the Peak to Average Power Ratio for the OFDM Signal

2017 ◽  
Vol 2017 ◽  
pp. 1-17
Author(s):  
Rajendra Kumar ◽  
Vuttipol Santitewagul
Keyword(s):  
Average Power ◽  
Bandwidth Efficiency ◽  
Power Ratio ◽  
Ofdm System ◽  
Single Carrier ◽  
Ofdm Signal ◽  
Qam Modulation ◽  
Computational Requirement ◽  
Power Ratio Reduction ◽  
Ratio Reduction

The paper presents multitransform OFDM-OP system for an effective PAPR (peak to average power ratio) reduction that has a reasonable computational requirement, does not introduce any distortion, needs relatively insignificant decrease in the bandwidth efficiency, and provides a PAPR very close to that for the single carrier modulation systems thus effectively eliminating any PAPR penalty incurred by the multicarrier OFDM system. The PAPR system consists of a bank of multiple orthonormal transforms and a minimum PAPR evaluation unit for finding the optimum transform index. The paper also presents a hybrid OFDM-OP-DSI system comprised of the multiple transforms and a novel dummy symbol insertion. The PAPR reduction performance of the presented systems is compared with those of the various other transform techniques of the literature. Various simulations on the presented systems show that these can achieve a PAPR that is very close to that of a single carrier system for QAM modulation with the order of modulation selected to be 16, 64, and 256.

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