Results 51 to 60 of about 918 (208)
Correlation Power Analysis with Companding Methods
, 2011 Companding methods have been profoundly applied in signal processing for quantization. And various companding schemes have been proposed to improve the PAPR (Peak to Average Power Ratio) of OFDM systems.
Liu, Hongying +5 more
core +1 more source
The application of µ-Law companding to mobile WiMax
, 2009 This chapter investigates the application of µ-Law companding to mobile WiMax.
Brian G +3 more
core +1 more source
, 2010 A Novel Multi-Exponential Function-based Companding Technique for Uniform Signal Compression over Channels with Limited Dynamic Range Companding, as a variant of audio level compression, can help reduce the dynamic range of an audio signal.
Moazzeni, T. +5 more
core +3 more sources
On Optimizing the PAPR of OFDM Signals With Coding, Companding, and MIMO
IEEE Access, 2019 One main disadvantage of the multiple-input-multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) system is that the signals transmitted on each antenna may experience high peak-to-average-power ratio (PAPR). We will present a new hybrid
Francisco Sandoval +2 more
doaj +1 more source
IEEE Access, 2017 Generally, the probability density function (PDF) of orthogonal frequency division multiplexing (OFDM) signal amplitudes follow the Rayleigh distribution, thus, it is difficult to correctly predict the existence of impulsive noise (IN) in powerline ...
Kelvin Anoh +4 more
doaj +1 more source
IEEE AccessFor optical communication, the transmitted signal must be real-valued that can be achieved by employing Hermitian symmetry (HS). But the HS results in increased power consumption and decreased spectral efficiency (SE). Therefore, a HS free asymmetrically
Vijaya Durga Chintala +4 more
doaj +1 more source
Companding Technique for Reducing Peak-to-Average Power Ratio in OFDM Linear Coded Systems
, 2020 Orthogonal Frequency division multiplexing (OFDM) is a very attractive technique in wireless communications which provides robustness to channel fading and immunity to impulse interference.
Ragini, B. +2 more
core +1 more source
A companding approach for nonuniform quantization of digital holograms of three-dimensional objects [PDF]
, 2006 We apply two novel nonuniform quantization techniques to digital holograms of three-dimensional real-world objects. Our companding approach, combines the efficiency of uniform quantization with the improved performance of nonuniform quantization. We show
Shortt, Alison +2 more
core +1 more source
Companding with junction f.e.t.
Electronics Letters, 1970 As companding elements, field-effect transistors have advantages over p–n diodes; they have suitably shaped i/v characteristics which are controllable by gate bias. Tests show that a departure from linearity of compressor and expander in cascade can be corrected to have an error of less than 1%.
J.E. Flood, F. Morris
openaire +1 more source
An Enhanced Companding Algorithm for Universal Filtered Multi-Carrier System
ETRI JournalThis paper proposes a new companding scheme called three μ-law compand-ing to reduce the peak-to-average power ratio (PAPR) in a universal filtered multicarrier system. The proposed scheme is more flexible and provides better PAPR reduction and bit error
Vijaya Durga Chintala +3 more
doaj +1 more source