Results 31 to 40 of about 1,184 (161)
Bit rates in audio source coding [PDF]
, 1992 The goal is to introduce and solve the audio coding optimization problem. Psychoacoustic results such as masking and excitation pattern models are combined with results from rate distortion theory to formulate the audio coding optimization problem.
Veldhuis, Raymond N.J.
core +3 more sources
PTS and Companding Transform for PAPR Reduction in OFDM
International Journal of Computer Applications, 2013 A combined model of Partial Transmit Sequence (PTS) and a Companding Transform is proposed to reduce Peak-toAverage Power Ratio (PAPR) in Orthogonal Frequency Division Multiplexing (OFDM). Simulation results demonstrate that the proposed scheme can substantially offer better PAPR reduction and BER performance.
Abhishek Sharma, Roopam Pawar
openaire +1 more source
Reversible Data Hiding for DICOM Image Using Lifting and Companding
Cryptography, 2019 In this work, a reversible watermarking technique is proposed for DICOM (Digital Imaging and Communications in Medicine) image that offers high embedding capacity (payload), security and fidelity of the watermarked image.
Amit Phadikar +2 more
doaj +1 more source
A new technique for reducing size of a wpt system using two-loop strongly-resonant inductors [PDF]
, 2017 Mid-range resonant coupling-based high efficient wireless power transfer (WPT) techniques have gained substantial research interest due to the number of potential applications in many industries.
Adebisi, Bamidele +6 more
core +3 more sources
Research on Compressed Multiscale Retinex Image Enhancement Algorithms
Journal of Harbin University of Science and Technology, 2020 The Retinex algorithm for face image illumination compensation and color restoration is an effective one in the traditional image enhancement algorithm under the condition of low illumination The traditional MSRCR algorithm can still produce some ...
LIU Mingzhu, SU Taoyu, WANG Yining
doaj +1 more source
IEEE Access, 2019 Reliable wireless data transmission in intelligent transportation systems (ITS) has drawn a wide concern in recent years. As an efficient wireless transmission technology, multi-carrier communication (MCM) finds its way in many applications. However, the
Jun Hou +5 more
doaj +1 more source
Companding transform technique combined with iterative filtering for reducing PAPR of OFDM signals
Tongxin xuebao, 2015 Considering the drawbacks of the traditional companding transforms，an efficient companding scheme combined with iterative filtering was proposed to reduce the peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals.
Chao YANG, Yong WANG, Jian-hua GE
doaj +2 more sources
Throughput Scaling Of Convolution For Error-Tolerant Multimedia Applications
, 2012 Convolution and cross-correlation are the basis of filtering and pattern or template matching in multimedia signal processing. We propose two throughput scaling options for any one-dimensional convolution kernel in programmable processors by adjusting ...
Anam, Mohammad Ashraful +1 more
core +1 more source
A New Approach to Peak Threshold Estimation for Impulsive Noise Reduction Over Power Line Fading Channels [PDF]
, 2018 Impulsive noise (IN) is a major component that degrades signal integrity in power line communication (PLC) systems. PLC systems driven by orthogonal frequency-division multiplexing (OFDM) have Rayleigh distributed amplitudes.
Adebisi, Bamidele +5 more
core +2 more sources
CRLB for joint estimation of TDOA, phase, FDOA, and Doppler rate
The Journal of Engineering, Volume 2019, Issue 21, Page 7628-7631, November 2019., 2019 To avoid decline of FDOA estimation precision caused by relative Doppler companding, Doppler rate has to be considered and estimated jointly with TDOA, phase, and FDOA. However, CRLB of the joint estimation is still unclear. This study addresses on derivation of the CRLB. First, the joint estimation model is constructed.
Dexiu Hu +4 more
wiley +1 more source