Results 91 to 100 of about 3,698 (177)

Investigating of The Reducing Techniques for The Peak to Average Power Ratio(PAPR) in OFDM Systems

open access: yes, 2020
High Peak to Average Power Ratio (PAPR) for OFDM system is still a demanding area and difficult issue. The radio transmitter stations for covering and getting enough transmit power in their desired area have to use High Power Amplifier (HPA).
Saeed Mohseni, Mohammad A Matin
core  

Peak-to-average power ratio reduction in wavelet packet modulation Using Binary Phase Sequence.

open access: yes, 2019
A novel method of Peak–to-Average–Power-Ratio reduction is presented in this paper using  WPT  for multi carrier modulationand Riemann matrix for phase sequencing in SLM.
Bhalchandra, A. S., Kulkarni, Vijaya M.
core   +1 more source

Peak-to-average power ratio reduction versus digital pre-distortion in OFDM based systems

open access: yes, 2011
In this paper we evaluate the effect of applying peak-to-average power ratio (PAPR) reduction and digital pre-distortion (DPD) on RF power amplifiers when an OFDM signal is used.
Charles Nader   +12 more
core   +1 more source

A Novel Approach to Deducing of the Data- PAPR Relation for OFDM System

open access: yesJournal of Engineering and Sustainable Development, 2012
Orthogonal Frequency Division Multiplexing (OFDM) is a very attractive technique for high-data-rate transmission in wireless and wired applications. The main drawback of the OFDM technique is its high peak to average power ratio (PAPR).
Dhafer R. Zaghar, Tahreer Sh. Mahmoud
doaj  

Peak-to-Average Power Ratio analysis in MIMO systems

open access: yes, 2006
International audienceIn this paper, we analyze the Peak-to-Average Power Ratio (PAPR) in Multiple Input Multiple Output (MIMO) systems based on Alamouti diversity scheme. This analysis is at both transmitter and re- ceiver sides with channel influences.
Louët, Yves, Rihawi, Basel
core   +1 more source

Comparison of Various Peak To Average Power Reduction Techniques

open access: yes, 2012
In this paper we study various peak to average power reduction techniques and find the advantages and disadvantages of these techniques.The main disadvantage is high PAPR in transmission for high-speed transmission due to its spectrum efficiency and ...
Ahlawat, Amit
core  

The study of peak to average power ratio (PAPR) reduction in wavelet based multicarrier [PDF]

open access: yes, 2012
Wireless digital communications is rapidly expanding, resulting in a demand for wireless systems that are reliable and have a high spectral efficiency. As we move in to the future there is a rising demand for high performance, high capacity and high bit ...
Ramli, Siti Rokiah
core  

Peak to Average Power Ratio sensor for Green Cognitve Radio

open access: yes, 2010
International audienceHigh Peak to Average Power Ratio (PAPR) is a critical issue in multi-standard and multi-carrier communication systems. This problem can result in large performance degradation due to the non-linearity of the High Power Amplifier ...
Louët, Yves   +2 more
core  

Modified Tone Reservation for Peak-to-Average Power Ratio on OFDM systems

open access: yes, 2016
International audienceOne of the main drawbacks of orthogonal frequency division multiplex modulation is its high peak-to-average power ratio (PAPR) which can induce poor power efficiency at high power amplifier. Tone reservation (TR) is the most popular
Diallo, Lamarana Mamadou   +3 more
core   +1 more source

Constellation Compaction Design to Reduce Both PAPR and Average Power in OFDM Systems

open access: yesEURASIP Journal on Wireless Communications and Networking, 2010
This paper proposes a novel way to compact the constellation points in QAM modulation schemes and exploits this compaction to reduce the peak to average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems.
Al-Shaikhi Ali
doaj  

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