Results 51 to 60 of about 1,153 (147)
ICT ExpressThe filter bank multi-carrier with offset quadrature amplitude modulation (FBMC/OQAM) is extensively utilized in communication scenarios characterized by severe Doppler interference, owing its remarkable ability for precise time–frequency positioning ...
Xinyu Liu +4 more
doaj +1 more source
ICT Express, 2019 Due to large peak-to-average power ratio (PAPR) at the time domain OFDM signal, various peak signal reduction methods for OFDM systems have been proposed.
Satoshi Taroda +4 more
doaj +1 more source
A PAPR correction scheme for LoRa self‐jamming waveforms
IET Communications, Volume 18, Issue 19, Page 1588-1603, December 2024.A self‐jamming scheme of LoRa waveforms enabling secure transmissions is recently proposed in literature, which performs well in simulations. However, experiments on SDR equipment immediately showed that a transmission is impossible due to PAPR introduced by the waveform modification.
Clément Demeslay +5 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
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
Earth and Space Science, Volume 4, Issue 8, Page 506-539, August 2017., 2017 Abstract The Mars Science Laboratory Mast camera and Descent Imager investigations were designed, built, and operated by Malin Space Science Systems of San Diego, CA. They share common electronics and focal plane designs but have different optics. There are two Mastcams of dissimilar focal length. The Mastcam‐34 has an f/8, 34 mm focal length lens, and
Michal C. Malin +28 more
wiley +1 more source
Earth and Space Science, Volume 4, Issue 7, Page 396-452, July 2017., 2017 Abstract The NASA Curiosity rover Mast Camera (Mastcam) system is a pair of fixed‐focal length, multispectral, color CCD imagers mounted ~2 m above the surface on the rover's remote sensing mast, along with associated electronics and an onboard calibration target.
J. F. Bell III +19 more
wiley +1 more source
A Review of Partial Transmit Sequence for PAPR Reduction in the OFDM Systems
IEEE Access, 2019 Orthogonal frequency division multiplexing (OFDM) is a superior technology for the high-speed data rate of wire-line and wireless communication systems.
Yasir Amer Jawhar +6 more
doaj +1 more source
PAPR Reduction in OFDM Systems using Non-Linear Companding Transform
IOSR Journal of Electronics and Communication Engineering, 2014 In this paper a non-linear companding transform is proposed which can effectively reduce the PAPR value in OFDM systems. High value of PAPR has undesirable effects on the performance of wireless communication systems. Various companding schemes are used to reduce the problem of PAPR in orthogonal frequency division multiplexing schemes.
Deepender Gill, Garima Saini
openaire +1 more source
Single-input Multiple-output Tunable Log-domain Current-mode Universal Filter [PDF]
, 2013 This paper describes the design of a current-mode single-input multiple-output (SIMO) universal filter based on the log-domain filtering concept.
Dejhan, K., Prommee, P.
core +1 more source