Results 131 to 140 of about 1,404 (166)
Some of the next articles are maybe not open access.
Theoretical Analysis of PAPR Companding Techniques for FBMC Systems
Wireless Personal Communications, 2021The offset quadrature amplitude modulation (OQAM) with filter bank multicarrier (FBMC) has turn on considerable interest in last decades over orthogonal frequency division multiplexing (OFDM) because of their a significant number of advantages. However, largest peak to average power ratio (PAPR) minimization techniques developed for OFDM systems may ...
Srinivas Ramavath, Umesh Chandra Samal
openaire +1 more source
Comparision between SLM-companding and precoding-companding techniques in OFDM systems
2016 International Conference on Circuit, Power and Computing Technologies (ICCPCT), 2016OFDM is a multicarrier modulation technique which is used in communication systems like Wireless Personal Area Network (WPAN), Wireless Local Area Network (WLAN), Wireless Metropolitan Area Network (WMAN), Wi-Max, DVB-T etc for the high rate transmission over wireless radio channels.
Alex Kangappaden +5 more
openaire +1 more source
Log-linear companding—A digital companding technique
Proceedings of the IEEE, 1969A new method of near-logarithmic companding is proposed. The method consists of first uniformly quantizing each sample and then processing the resulting binary number digitally. This is in contrast to the usual scheme of first compressing the input and then uniformly quantizing it. The method presented here is extremely simple to implement and requires
G.G. Apple, P.A. Wintz
openaire +1 more source
"Noninvasive" techniques for syllabic companding in signal processors
ISCAS 2001. The 2001 IEEE International Symposium on Circuits and Systems (Cat. No.01CH37196), 2002Two novel methods are described for syllabic companding in signal processors which make state variable updating unnecessary, for piecewise constant input and output gains. Measurements and simulations are used as confirmation of the validity of the proposed techniques.
L. Toth, G. Palaskas, Y. Tsividis
openaire +1 more source
Nonlinear companding technique for PAPR reduction in OFDM
2014 International Conference on Signal Propagation and Computer Technology (ICSPCT 2014), 2014In the current scenario, the increasing demand of high speed data transfer in wireless communication has been raised the requirement and optimization of orthogonal frequency division multiplexing (OFDM) based system like Advanced Long Term Evolution system.
Eashendra Singh +3 more
openaire +1 more source
Lossless Audio Steganographic Method Using Companding Technique
2021The objective of the work presented here was an implementation of lossless steganographic method on audio files in the frequency domain. The main contribution here was to use of companding technique in audio files to preserve the secret data reversibility with less influence on the signal.
openaire +1 more source
A Companding Technique for PAPR Reduction of OFDM Systems
2006 International Symposium on Intelligent Signal Processing and Communications, 2006A companding technique using the hyperbolic tangent transform is proposed for reducing the peak-to-average-power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals. This technique is practical and can be implemented easily in integrated circuit design.
M.-J. HAO, C.-P. LIAW
openaire +1 more source
On the performance of companding techniques for DMT optical links
Optics Communications, 2022Abstract In this paper the performance of Discrete Multi-Tone (DMT) optical links using nonlinear companding schemes for peak-to-average power ratio (PAPR) reduction is investigated. First, it is developed an analytical expression to evaluate the total distortion at the demodulation stage introduced by the expansion process, and also to estimate the ...
G. Zoireff +2 more
openaire +2 more sources
Companding techniques for SC-FDMA and sensor network applications
International Journal of Electronics Letters, 2019The large Peak-to-Average Power Ratio (PAPR) is a serious problem in wireless communication systems for mobile and sensor network applications.
Amal F Abd El-Rahman +8 more
openaire +1 more source
Novel companding technique for PAPR reduction in OFDM system
International Conference on Recent Advances and Innovations in Engineering (ICRAIE-2014), 2014High value of PAPR and Inter-carrier Interference are two main drawbacks of the orthogonal frequency division multiplexing (OFDM) based wireless systems. The problem of high value of PAPR has been addressed in this work. A novel companding technique is proposed to reduce the PAPR of OFDM signals.
Eashendra Singh, Mohammad Arif
openaire +1 more source