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International Journal of Technology Enhancements and Emerging Engineering Research (ISSN 2347-4289)
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IJTEEE >> Volume 3 - Issue 6, June 2015 Edition



International Journal of Technology Enhancements and Emerging Engineering Research  
International Journal of Technology Enhancements and Emerging Engineering Research

Website: http://www.ijteee.org

ISSN 2347-4289



On The Reduction Of Papr In The Multicarrier Techniques Based On Mobile Wireless System

[Full Text]

 

AUTHOR(S)

KUSSUM BHAGAT, Dr. JYOTEESH MALHOTRA

 

KEYWORDS

Keywords : OFDM, PAPR, PTS, SC-FDMA, IFDMA, LFDMA

 

ABSTRACT

ABSTRACT :OFDM is very attractive technique now a day due to its various benefits like easy and efficient in dealing with multipath, robust in nature, spectral efficiency and high speed data transmission. Thus because of its applications OFDM plays a vital role for upcoming 4G wireless communication. OFDM works either as the multiplexing or modulation technique. It has also been used in broadband multimedia wireless services. Beside of its application, one major drawback of OFDM system is high Peak to Average Power ratio (PAPR) which causes non-linearity at the receiving end. The paper describes the PAPR problem in OFDM system and various PAPR reduction techniques that are used to reduce the PAPR have been discussed. The PTS technique for 16 QAM/OFDM systems is used to reduce the PAPR and simulation results are then analyzed. Also, SC-FDMA is another technique which can replace the OFDM. Thus the subcarrier mapping schemes of SC-FDMA has been described. The results for IFDMA and LFDMA for 16QAM modulation technique are shown when DFT spreading technique is applied.

 

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