Results 51 to 60 of about 46,201 (198)
Resource allocation in MIMO systems specific to radio communication [PDF]
Archives of Electrical Engineering, 2019 The performance of the multi-input multi-output (MIMO) systems can be improved by spatial modulation. By using spatial modulation, the transmitter can select the best transmit antenna based on the channel variations using channel state information (CSI).
Bahar Ghaderi, Naser Parhizgar
doaj +1 more source
, 2013 Network coding (NC) compresses two traffic flows with the aid of low-complexity algebraic operations, hence holds the potential of significantly improving both the efficiency of wireless two-way relaying, where each receiver is collocated with a ...
Cao, Zhigang, Chen, Wei, Hanzo, Lajos
core +1 more source
Teleportation of continuous variable polarisation states [PDF]
, 2003 This paper discusses methods for the optical teleportation of continuous variable polarisation states. We show that using two pairs of entangled beams, generated using four squeezed beams, perfect teleportation of optical polarisation states can be ...
A. Dolińska +22 more
core +2 more sources
Demultiplexing in mode-division multiplexing system using multichannel blind deconvolution
IEEE Photonics Journal, 2016 We propose a mode demultiplexing method based on multichannel blind deconvolution (MBD) for a mode-division multiplexing (MDM) system. A 6 $\times$ 6 MDM transmission system is simulated to verify the performance of MBD.
Li Yan, Guijun Hu
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Differential Space-Time Coding Scheme Using Star Quadrature Amplitude Modulation Method
EURASIP Journal on Advances in Signal Processing, 2006 Differential space-time coding (DSTC) has received much interest as it obviates the requirement of the channel state information at the receiver while maintaining the desired properties of space-time coding techniques. In this paper, by introducing star
Bi Guangguo, Yu Xiangbin, Xu DaZhuan
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Coherent control of broadband vacuum squeezing [PDF]
, 2007 We present the observation of optical fields carrying squeezed vacuum states at sideband frequencies from 10Hz to above 35MHz. The field was generated with type-I optical parametric oscillation below threshold at 1064nm.
Chelkowski, Simon +3 more
core +2 more sources
Comparative Analysis of the Efficiency of Detecting Some Amplitude-Phase Modulated Signals in Wireless Communication Systems [PDF]
International Journal of Electronics and Telecommunications, 2019 This article presents the results of the research of noiseimmunity of wireless communication systems using signals that are formed on the basis of eight-position quadrature-amplitude modulation (8-QAM) and eight-position amplitude modulation of many ...
Andriy P. Bondariev +3 more
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Soft-Output Maximum-Likelihood Detector for Quadrature Spatial Modulation
Nigerian Journal of Technological Development, 2018 Spatial modulation (SM) presents a pragmatic approach for transmitting information, where the modulator uses well known amplitude/phase modulation (APM) techniques such as phase shift keying (PSK) and quadrature amplitude modulation (QAM), but also ...
M. A. Tijani, A. A. Tijani
doaj
Guangtongxin yanjiu, 2023 To simplify the structure of real-time coherent Free-Space Optical (FSO) / wireless systems and reduce costs, this paper implements a low-cost FSO system based on bandpass Delta-Sigma Modulation (DSM) technology. A 256-ary Quadrature Amplitude Modulation
WANG Zhong-zhong, AO Xue-yuan, YANG Qi
doaj
IEEE Access, 2016 Two novel blind equalization techniques for odd bit rectangular quadrature amplitude modulation (RQAM) signaling are proposed in this paper, namely, rectangular contour algorithm (RRECT CA) and improved rectangular contour algorithm (IRCA).
Qasim Umar Khan +2 more
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