Results 21 to 30 of about 1,161,775 (284)

Hybrid Peak-to-Average Power Ratio Reduction Techniques: Review and Performance Comparison

open access: yesIEEE Access, 2017
Orthogonal frequency division multiplexing (OFDM) is an efficient multi-carrier modulation technique for wireless communication. However, one of the main drawbacks encountered in implementing it is its resultant high peak-to-average power ratio (PAPR ...
Francisco Sandoval   +2 more
doaj   +1 more source

A Closed Form Selected Mapping Algorithm for PAPR Reduction in OFDM Multicarrier Transmission

open access: yesEnergies, 2022
Nowadays, the demand for communication multi-carriers’ channels, where the sub-channels are made mutually independent by using orthogonal frequency division multiplexing (OFDM), is widespread both for wireless and wired communication systems.
Sara Carcangiu   +2 more
doaj   +1 more source

Peak to average power ratio based spatial spectrum sensing for cognitive radio systems [PDF]

open access: yes, 2017
The recent convergence of wireless standards for incorporation of spatial dimension in wireless systems has made spatial spectrum sensing based on Peak to Average Power Ratio (PAPR) of the received signal, a promising approach.
Ghafoor, Abdul   +2 more
core   +1 more source

A Novel Clipping-Based Method to Reduce Peak-To-Average Power Ratio of OFDM Signals

open access: yesInformation, 2020
Orthogonal frequency division multiplexing (OFDM) is a widely used technology for wireless broadband communications. However, it also suffers from some drawbacks.
Bo Tang   +3 more
doaj   +1 more source

Peak to Average Power Ratio Reduction Techniques

open access: yesInternational Journal for Research in Applied Science and Engineering Technology, 2021
Multiple-input to multiple-output (MIMO) and orthogonal frequency division multiplexing (OFDM) are the utmost widely used wireless communication system because of its large benefits and advantageous. Though MIMO OFDM systems have high advantages there is a major drawback that makes the system noisy and the inefficient use of bandwidth.
openaire   +1 more source

Peak to Average Power Ratio Reduction in OFDM Using Pulse Shaping Technique [PDF]

open access: yes, 2016
Orthogonal Frequency Division Multiplexing (OFDM) is a special type of multicarrier modulation in which a signal is split into several narrowband channels at different frequencies.
Das, Diptadeep
core   +4 more sources

The Noncoherent Rician Fading Channel -- Part II : Spectral Efficiency in the Low-Power Regime [PDF]

open access: yes, 2005
Transmission of information over a discrete-time memoryless Rician fading channel is considered where neither the receiver nor the transmitter knows the fading coefficients.
Gursoy, Mustafa Cenk   +2 more
core   +2 more sources

Predistortion performance considering Peak to Average Power ratio reduction in OFDM context [PDF]

open access: yes, 2012
International audienceSome recent communication systems like DVB-T2 standard set up a PAPR reduction technique followed by a linearization's one. So in such a scenario, the performance of the linearization is influenced undoubtedly by the PAPR reduction ...
Gouba, O. Abel, Louët, Yves
core   +4 more sources

Multi-Carrier Waveform Design for Directional Modulation Under Peak to Average Power Ratio Constraint

open access: yesIEEE Access, 2019
Multi-carrier-based waveform design for directional modulation (DM) is studied, where simultaneous data transmission over multiple frequencies can be achieved, with given phase distribution at the main lobe and as random as possible over sidelobe regions
Bo Zhang, Wei Liu, Qiang Li
doaj   +1 more source

Peak-to-average power ratio reduction in OFDM systems using smoothing technique [PDF]

open access: yes, 2009
This paper presents a new peak-to-average power ratio (PAPR) reduction technique by smoothing the power components of OFDM signals. The smoothing technique only adds a simple process to the existing OFDM signal processing.
Al-Azzo, Wisam F.   +4 more
core   +1 more source

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