Results 41 to 50 of about 12,277 (211)
On Optimizing Hierarchical Modulation in AWGN channel
CoRR, 2016 Hierarchical modulation (HM) is able to provide different levels of protection for data streams and achieve a rate region that cannot be realized by traditional orthogonal schemes, such as time division (TD). Nevertheless, criterions and algorithms for general HM design are not available in existing literatures.
Baicen Xiao +3 more
openaire +2 more sources
Iterative channel equalization, channel decoding and source decoding
, 2005 The performance of soft source decoding is evaluated over dispersive AWGN channels. By employing source codes having error-correcting capabilities, such as Reversible Variable-Length Codes (RVLCs) and Variable-Length Error-Correcting (VLEC) codes, the ...
Wang, J., Yang, L-L., Hanzo, L.
core +1 more source
Ripple design of LT codes for AWGN channel [PDF]
, 2012 —In this paper we present an analytical framework for designing LT codes in additive white Gaussian noise (AWGN) channels. We show that some of the analytical results from the binary erasure channel (BEC) also hold in AWGN channels with a slight ...
Popovski, Petar; id_orcid +9 more
core +1 more source
Comparison of the pituitary gland transcriptome in pregnant and non-pregnant goats (Capra hircus)
Czech Journal of Animal Science, 2019 Pregnancy is strictly regulated by neuronal and hormonal factors with an essential role being played by the pituitary gland. We screened for differentially expressed genes (DEGs) in the pituitary that function in goat gestational development.
Qing Quan +10 more
doaj +1 more source
Techne, 2021 In this study, the performance of bipolar optical code division multiple access (OCDMA) with dual electro-optical modulator (EOM) scheme for multi-user scenario was tested and analyzed with OptiSystem version 10.
Eddy Wijanto
doaj +1 more source
Advanced Science, EarlyView.A graphene‐metal hybrid transmissive metasurface enables electrically tunable mid‐infrared transmission modulation through ionic gel top gating. By combining graphene with a metallic slit metasurface, high modulation efficiency and broadband operation are achieved simultaneously, demonstrating efficient electrical control of mid‐infrared transmission ...
Heonhak Ha +4 more
wiley +1 more source
A Novel Architecture for M-FSK /DS Spread Spectrum Communication System
Anbar Journal of Engineering SciencesThe proposed communication system combines direct sequence spread spectrum with multiple frequency shift keying and evaluates bit error rate performance under AWGN and Rayleigh fading channels.
ali husien
doaj +1 more source
Jurnal Nasional Teknik Elektro, 2017 This study is the simulation of SPIHT image compression using diversity selection combining techniques. The image is compressed by using SPIHT compression techniques after wavelet decomposition.
Baharuddin Abbas
doaj +1 more source
Energy Science &Engineering, EarlyView.A real‐time power quality disturbance generator is developed using virtual instrumentation based on LabVIEW and NI MyDAQ. The system generates IEEE‐standard PQ events with controllable noise and harmonics. Measurement uncertainty analysis confirms its reliability for realistic testing of Power Quality Disturbance detection and classification algorithms.
Abdullah Saud +5 more
wiley +1 more source
Image Steganography Based on NR-Polar DCSK System over Multipath Fading Channel
Journal of Communications Software and SystemsProtecting sensitive data has become an urgent necessity in wireless communication, which predates the emergence of Internet development, where signals transmitted over a channel are distorted by fading, noise, attackers, and interference, which leads to
Noor Dheyaa Majeed +2 more
doaj +1 more source