Results 71 to 80 of about 1,404 (166)
IEEE Open Journal of Signal ProcessingLow-complexity channel estimation techniques are key to enabling efficient, reliable, and real-time communication in modern wireless devices operating under resource and energy constraints.
Inaamullah Khan +2 more
doaj +1 more source
Programmable low-voltage continuous-time filter for audio applications [PDF]
, 1999 The implementation of a continuous-time filter (CTF) useful for audio frequency applications is presented in this paper. The filter functions can be programmed and tuned with two independent control variables.
Rueda Rueda, Adoración +1 more
core
Performance Improvement Of OOFDM Systems Based On Advanced Logarithmic Companding Technique
Transactions on Networks and Communications, 2018 High peak-to-average power ratio (PAPR) is a common problem in Orthogonal Frequency Division Multiplexing (OFDM) transmissions. In this paper, an advanced logarithmic companding technique is interested to reduce this factor due to their flexibility and low complexity.
Ali N. Kareem +4 more
openaire +2 more sources
Flexible Multi-Group Single-Carrier Modulation: Optimal Subcarrier Grouping and Rate Maximization
, 2017 Orthogonal frequency division multiplexing (OFDM) and single-carrier frequency domain equalization (SC-FDE) are two commonly adopted modulation schemes for frequency-selective channels. Compared to SC-FDE, OFDM generally achieves higher data rate, but at
Lie, Joni Polili +3 more
core +1 more source
Delta-modulation for the transmission of image data Final report [PDF]
Delta modulation for image data ...
Ehrman, L., Gish, H.
core +1 more source
Implementasi PCM-Companding Dan Run Length Encoding Menggunakan FPGA Untuk Perekaman Sinyal Suara Pada Modul DRAM [PDF]
, 2002 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.
Baki, S. H. (Siti), Sugiarto, I. (Indar)
core
Adaptive Square-Rooting Companding Technique For Papr Reduction In Ofdm Systems
, 2011 This paper addresses the problem of peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. It also introduces a new PAPR reduction technique based on adaptive square-rooting (SQRT) companding process. The SQRT process of the proposed technique changes the statistical characteristics of the OFDM output signals ...
Al-Azzo, Wisam F., Mohd Ali, Borhanuddin
openaire +1 more source
PAPR reduction using SLM-PTS-CT hybrid PAPR method for optical NOMA waveform. [PDF]
Heliyon, 2023 Kumar A +5 more
europepmc +1 more source
ACSB: A minimum performance assessment [PDF]
Amplitude companded sideband (ACSB) is a new modulation technique which uses a much smaller channel width than does conventional frequency modulation (FM). Among the requirements of a mobile communications system is adequate speech intelligibility.
Jones, Lloyd Thomas, Kissick, William A.
core +1 more source
Method and apparatus for operating on companded PCM voice data [PDF]
, 1986 The method and apparatus constructed in accordance with this invention permits a plurality of parties to speak to each other on a conference line with a minimum of interference. The apparatus digitizes audio signals.
Byrne, F.
core +1 more source