Results 11 to 20 of about 883,308 (287)
Quantum internet using code division multiple access. [PDF]
Sci Rep, 2013 AbstractA crucial open problem inS large-scale quantum networks is how to efficiently transmit quantum data among many pairs of users via a common data-transmission medium. We propose a solution by developing a quantum code division multiple access (q-CDMA) approach in which quantum information is chaotically encoded to spread its spectral content and ...
Zhang J +7 more
europepmc +6 more sources
Information Leakage Rate of Optical Code Division Multiple Access Network Using Wiretap Code [PDF]
Entropy, 2023 Secrecy capacity is usually employed as the performance metric of the physical layer security in fiber-optic wiretap channels. However, secrecy capacity can only qualitatively evaluate the physical layer security, and it cannot quantitatively evaluate ...
Rongwo Xu +4 more
doaj +2 more sources
Two-Dimensional Permutation Vectors’ (PV) Code for Optical Code Division Multiple Access Systems [PDF]
Entropy, 2020 In this paper, we present a new algorithm to generate two-dimensional (2D) permutation vectors’ (PV) code for incoherent optical code division multiple access (OCDMA) system to suppress multiple access interference (MAI) and system complexity.
Hassan Yousif Ahmed +5 more
doaj +2 more sources
Time-Hopping Multicarrier Code-Division Multiple Access [PDF]
IEEE Transactions on Vehicular Technology, 2007 A time-hopping multicarrier code-division multiple-access (TH/MC-CDMA) scheme is proposed and investigated. In the proposed TH/MC-CDMA, each information symbol is transmitted by a number of time-domain pulses with each time-domain pulse modulating a subcarrier.
Lie-liang Yang, Senior Member
openaire +5 more sources
Fault Tolerant Spectral/Spatial Optical Code Division Multiple Access Passive Optical Network [PDF]
SensorsHigh-capacity communication networks are built to provide high throughput and low latency to accommodate the growing demand for bandwidth. However, the provision of these features is subject to a robust underlying network, which can provide high capacity
Rahat Ullah +8 more
doaj +2 more sources
Codebook Code Division Multiple Access Image Steganography [PDF]
Radioengineering, 2005 In this paper, a new modification of spread spectrum imagesteganography (SSIS) is presented. The proposed modification of SSIShides and recovers a message of substantial length within digital imagewhile maintaining the original image size and dynamic ...
S. Surin, D. Levicky
doaj +2 more sources
A Framework for Code Division Multiple Access Wireless Power Transfer
IEEE Access, 2021 The availability of energy is one of the major hindrances to unlocking the massive potential of electronic devices. Powering a highly connected network of devices requires multiple access and a wireless power transfer (WPT) solution that is scalable and ...
Akshay Sarin, Al-Thaddeus Avestruz
doaj +1 more source
Enhanced overloaded code division multiple access for network on chip
IET Computers & Digital Techniques, 2022 The Code‐division multiple access (CDMA) method is commonly used as the network infrastructure in multi‐core chips. One of its advantages is the simultaneous connection of all network components. Another advantage is the constant delay of this method. On
Behnam Vakili, Morteza Gholipour
doaj +1 more source
IEEE Access, 2020 Sidelobe raising, caused by multipath and multiple-access interference (MAI), hinders the signal detection and time-delay estimation of multicarrier code-division multiple-access (MC-CDMA) signals, which are crucial for localization and tracking ...
Yuyao Shen, Ying Xu
doaj +1 more source
Design and Implementation of MC-CDMA Technique Using FPGA [PDF]
Engineering and Technology Journal, 2013 Multicarrier Code Division Multiple Access (MC-CDMA) is attractive technique for high speed wireless data transmission; it's a combination of Orthogonal Frequency Division Multiplexing (OFDM) and Code Division Multiple Access (CDMA).
il A. H. Hadi, Layla Hattim Abood
doaj +1 more source