Results 121 to 130 of about 10,890,806 (175)
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PAPR reduction using precoding and companding techniques for OFDM systems
2015 International Conference on Advances in Computer Engineering and Applications, 2015For multipath propagation systems OFDM provides good choice but also suffers with high peak to average power ratio (PAPR) at the transmitter side. High PAPR values results in non-linearites at transmission leading to complex designing. Therefore reduction of PAPR is necessary for lesser complexities, higher efficiency and greater stability.
Nishant Sharan
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On companding techniques to mitigate PAPR in SC-FDMA systems
International Journal of Wireless and Mobile Computing, 2020Single Carrier Frequency Division Multiple Access (SC-FDMA) is being used successfully in the uplink communications of Long Term Evolution (LTE) standard.
K Shri Ramtej
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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
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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
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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
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Analysis of Companding Techniques Applied to Onboard Telemetry Systems
Applied Mechanics and Materials, 2012 In order to increase the dynamic range and the signal-to-quantization noise ratio (SQNR) of telecommunication systems, companding techniques were developed, such as the μ-law and the A-law. These techniques allow a non-uniform quantization of the signal using a compressor circuit followed by a uniform quantizer in the transmitter and the reconstruction
Marcio Barbosa Lucks +1 more
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Reduction of PAPR in OTFS using rooting companding techniques
International Journal of Electronics Letters, 2022Peak-to-average power ratio (PAPR) is one of the major limitations of an orthogonal time frequency space (OTFS) system. To reduce the PAPR, this paper proposes three companding techniques, namely, logarithmic rooting companding, rooting companding, and ...
Hanumantharao Bitra +2 more
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Application of New Companding Techniques on the DWT-Based SC-FDMA System
Annals of Data Science, 2022Fathi Abd El-Samie +2 more
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Performance Analysis of MIMO-OFDM Wireless Systems using Precoding and Companding Techniques
2021 7th International Conference on Advanced Computing and Communication Systems (ICACCS), 2021Modern Wireless Communication systems provide an effective method for using the multipath propagation which is provided by using Multiple Input Multiple Output-Orthogonal Frequency Division Multiplexing (MIMO-OFDM) is having a high Peak-to-Average-Power ...
Abdul Azeez, S. Tarannum
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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
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