Results 51 to 60 of about 2,410 (185)
Earth and Space Science, Volume 11, Issue 8, August 2024.Abstract The Terminal Tracking Camera (TTCam) imaging system on the NASA Lucy Discovery mission consists of a pair of cameras that are being used mainly as a navigation and target acquisition system for the mission's asteroid encounters. However, a secondary science‐focused function of the TTCam system is to provide wide‐angle broadband images over a ...
Y. Zhao +11 more
wiley +1 more source
Wireless Communications and Mobile Computing, Volume 2018, Issue 1, 2018., 2018 This study proposes an iterative, joint channel estimation, equalization, and data detection method in the presence of high mobility for a multicarrier downlink system that communicates over rapidly time‐varying channels. The proposed method uses a basis expansion method (BEM) which has low computational complexity and helps to reduce the number of ...
Nihat Kabaoglu +3 more
wiley +1 more source
Efficient PAPR reduction algorithm in OFDM based on nonlinear piecewise companding
Tongxin xuebao, 2021 Focusing on the high peak-to-average power ratio （PAPR） problem in orthogonal frequency division multiplexing （OFDM） systems， a generalized hybrid of rayleigh and sine distribution based nonlinear companding algorithm for PAPR reduction in OFDM systems ...
Zhitong XING +5 more
doaj +2 more sources
Companding technique for high dynamic range measurements using gafchromic films
, 2011 We propose a methodology to perform dose measurements using gafchromic films which can span several decades of dose levels. The technique is based on a rescaling approach using different films irradiated at different dose levels.
Battum +13 more
core +1 more source
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
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
Zero-Delay Joint Source-Channel Coding in the Presence of Interference Known at the Encoder [PDF]
, 2016 Zero-delay transmission of a Gaussian source over an additive white Gaussian noise (AWGN) channel is considered in the presence of an additive Gaussian interference signal.
Ertem, T, Gunduz, D, Varasteh, M
core +1 more source
Joint Wyner-Ziv/Dirty Paper coding by modulo-lattice modulation
, 2008 The combination of source coding with decoder side-information (Wyner-Ziv problem) and channel coding with encoder side-information (Gel'fand-Pinsker problem) can be optimally solved using the separation principle.
Kochman, Yuval, Zamir, Ram
core +4 more sources
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
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