Results 71 to 80 of about 322 (180)

Continuous-Time and Companding Digital Signal Processors Using Adaptivity and Asynchronous Techniques

, 2013
The fully synchronous approach has been the norm for digital signal processors (DSPs) for many decades. Due to its simplicity, the classical DSP structure has been used in many applications.
Vezyrtzis, Christos
core   +1 more source

Implementasi PCM-Companding dan Run Length Encoding Menggunakan FPGA Untuk Perekaman Sinyal Suara Pada Modul DRAM

, 2004
Data Reduction Techniques have been developed to support a complex system which produces or requires a big amount of data. Sometimes, this bulky data require more spaces other than that provided by the system's memory.
Halimah Baki, Siti, Sugiarto, Indar
core   +2 more sources

Peak-To-Peak Average Power Ratio Reduction In Orthogonal Frequency Division Multiplexing System Using The Combination Of Comapnding And Pre-Coding Techniques [PDF]

, 2017
An orthogonal Frequency Division Multiplexing (OFDM) system has been widely used in the field of wireless communication application. However, there is a major drawback for OFDM systems which is high Peak to Average Power Ratio (PAPR).
Ooi, Xin Kai
core  

A Novel Reversible Watermarking Method based on Adaptive Thresholding and Companding Technique

, 2011
Embedding and extraction of a secret information as well as the restoration of the original un-watermarked image is highly desirable in sensitive applications like military, medical, and law enforcement imaging.
Nisar Ahmed Memon
core   +1 more source

A comparative study of nonlinear companding schemes for CO-OFDM transmissions

, 2014
International audienceWang’s nonlinear companding scheme is investigatedhere for the first time for CO-OFDM transmissions. Asa result of an optimal predistortion function design, wedemonstrate a 3 dB BER advantage for a systememploying a Semiconductor ...
Serban Bejan, Azou, Stéphane, Bejan, Serban, Morel, Pascal, Pascal Morel, Stephane Azou, Sharaiha, Ammar, Ammar Sharaiha   +7 more
core   +1 more source

Performance improvement of a SOA-based coherent optical-OFDM transmission system via nonlinear companding transforms

, 2015
International audienceCoherent-Optical OFDM systems are known to be sensitive to large peak-to-average power ratio (PAPR) at the transmitter output, due to nonlinear properties of some components involved in the transmission link.
Azou, Stéphane, Bejan, Serban, Morel, Pascal, Sharaiha, Ammar   +3 more
core   +1 more source

Reduction of PAPR in FBMC System Using Different Reduction Techniques

, 2018
In this research study, different Peak Average Power Ratio (PAPR) based reduction techniques, namely, A-Law companding, µ-Law companding, Clipping & Filtering and Clipping are analyzed for Filter Band Multi-Carrier (FBMC) with different transmission ...
Arun Kumar, Hemant Rathore
core   +1 more source

New Hybrid Schemes for PAPR Reduction in OFDM Systems

, 2020
The 3rd Generation Partnership Project (3GPP) introduced LTE to meet increasingly demands for communication services with high speed and quality. LTE uses OFDM in the form of OFDMA in the downlink and SCFDMA in the uplink combined with MIMO offering high
saleem nokaiee (8722494), Mohammed Alkhawlani (4968529)   +1 more
core   +1 more source

PAPR reduction using SLM-PTS-CT hybrid PAPR method for optical NOMA waveform. [PDF]

Heliyon, 2023
Kumar A, Rajagopal K, Alruwais N, Alshahrani HM, Mahgoub H, Othman KM.   +5 more
europepmc   +1 more source

Pre-Flight Calibration of the Mars 2020 Rover Mastcam Zoom (Mastcam-Z) Multispectral, Stereoscopic Imager. [PDF]

Space Sci Rev, 2021
Hayes AG, Corlies P, Tate C, Barrington M, Bell JF, Maki JN, Caplinger M, Ravine M, Kinch KM, Herkenhoff K, Horgan B, Johnson J, Lemmon M, Paar G, Rice MS, Jensen E, Kubacki TM, Cloutis E, Deen R, Ehlmann BL, Lakdawalla E, Sullivan R, Winhold A, Parkinson A, Bailey Z, van Beek J, Caballo-Perucha P, Cisneros E, Dixon D, Donaldson C, Jensen OB, Kuik J, Lapo K, Magee A, Merusi M, Mollerup J, Scudder N, Seeger C, Stanish E, Starr M, Thompson M, Turenne N, Winchell K.   +42 more
europepmc   +1 more source