Results 61 to 70 of about 29,287 (204)
Tongxin xuebao, 2022 To achieve the all-optical pattern matching for optoelectronic firewall which could process high-speed optical signals efficiently, a BPSK all-optical pattern recognition system with the data rate up to 42 Gbit/s was proposed and demonstrated by ...
Qihan ZHANG +5 more
doaj +2 more sources
Chirp pseudo‐noise signal and its receiving scheme for LEO enhanced GNSS
IET Radar, Sonar & Navigation, 2022 Low earth orbit (LEO) constellations for enhancing global navigation satellite systems (GNSS) have been investigated and studied due to their higher floor power and rapid geometric changes. Compared with GNSS based on medium orbit (MEO) and geostationary
Xin Zhao +4 more
doaj +1 more source
Structured optical receivers to attain superadditive capacity and the Holevo limit
, 2011 When classical information is sent over a quantum channel, attaining the ultimate limit to channel capacity requires the receiver to make joint measurements over long codeword blocks.
C. E. Shannon +3 more
core +1 more source
Improved SNR estimation for BPSK and QPSK signals
Electronics Letters, 2009 A novel non-data-aided SNR estimation technique for BPSK and QPSK modulations in complex additive white Gaussian noise (AWGN) is proposed. It uses the constant amplitude property of in-phase and quadrature components of these modulations to achieve an improved performance.
Evans, BG, Ijaz, I, Awoseyila A
openaire +4 more sources
IET Communications, Volume 20, Issue 1, January/December 2026.This paper develops a near‐field three‐dimensional geometry‐based stochastic channel model for cooperative STAR‐RIS systems equipped with cylindrical transmit arrays at the base station. The proposed model captures spherical wavefront propagation effects and coupled azimuth‐elevation characteristics under realistic near‐field conditions.
Antwi Owusu Agyeman +5 more
wiley +1 more source
IEEE Access, 2020 Given that signal is weakened to a certain extent in the process of noise suppression using mainstream method, and that new noise is introduced by signal processing system, causing the decrease of detection performance, to improve the performance of ...
Xiangyu Fan +4 more
doaj +1 more source
Analysis of non ambiguous BOC signal acquisition performance Acquisition [PDF]
, 2004 The Binary Offset Carrier planned for future GNSS signal, including several GALILEO Signals as well as GPS M-code, presents a high degree of spectral separation from conventional signals.
Calmettes, Vincent +3 more
core
Regenerative and Adaptive schemes Based on Network Coding for Wireless Relay Network
, 2012 Recent technological advances in wireless communications offer new opportunities and challenges for relay network.To enhance system performance, Demodulate-Network Coding (Dm-NC) scheme has been examined at relay node; it works directly to De-map the ...
Dai, Bin +2 more
core +1 more source
Electronics Letters, Volume 62, Issue 1, January/December 2026.1.This paper develops an analytical model to calculate the signal‐to‐interference ratio performance of mobile orthogonal frequency division multiplexing underwater acoustic (UWA) communication systems. 2.The model accounts for UWA channel distortion and non‐uniform Doppler effects, maintaining high accuracy across a range of Doppler shift magnitudes. 3.
Xinyu Liu +4 more
wiley +1 more source
Ambiguity Function Optimization Based on Joint Communication and Sensing Waveform
Electronics Letters, Volume 62, Issue 1, January/December 2026.The sidelobe suppression strategy proposed in this study demonstrates significant advantages. Its ability to effectively reduce ambiguity function sidelobes has important practical significance for engineering. ABSTRACT The ambiguity function (AF) plays a critical role in joint communication and sensing (JCAS) systems. In this letter, we design a novel
Zheming Guo, Baixiao Chen
wiley +1 more source