Results 21 to 30 of about 102,182 (133)
Optical Code Construction of 2D Spectral/Spatial BIBD Codes for SAC-OCDMA Systems
Applied Sciences, 2021 Optical code division multiple access (OCDMA) shows limitations in terms of the inefficient bandwidth utilization and low spectral density with one-dimensional (1D) codes. To overcome these limitations, a novel design is presented using a two dimensional
Teena Sharma +5 more
doaj +1 more source
Mathematical Problems in Engineering, Volume 2013, Issue 1, 2013., 2013 The study proposes the differential‐phase optical code‐division multiple‐access (OCDMA) network for radio‐over‐fiber (RoF) transmissions, and the characteristics are numerically analyzed. The network coder/decoders (codecs) are structured on the basis of arrayed‐waveguide‐grating (AWG) routers with complementary Walsh‐Hadamard (CWH) signature codes. In
Hsu-Chih Cheng +3 more
wiley +1 more source
Applied Sciences, 2019 We present packet switching applications based on extended spectral-amplitude-coding (SAC) labels in generalized multi-protocol label switching (GMPLS) networks.
Kai-Sheng Chen
doaj +1 more source
Performance Analysis of Hybrid PDM-SAC-OCDMA-Enabled FSO Transmission Using ZCC Codes
Applied Sciences, 2023 The need for a high-speed transmission network has become essential due to the exponential increase in traffic. In this paper, a free-space-optics (FSO) link modelled by integrating two multiplexing techniques, i.e., spectral amplitude coding-optical ...
Ammar Armghan +4 more
doaj +1 more source
International Scholarly Research Notices, Volume 2011, Issue 1, 2011., 2011 This paper demonstrates an analytical approach on the bit error rate (BER) performance evaluation of a multi‐ carrier code division multiple access (MC‐CDMA) communication link operating over terrestrial free space optical (FSO) channel considering effect of atmospheric turbulence The turbulence induced intensity fading is statistically modeled by ...
MD. Zoheb Hassan +4 more
wiley +1 more source
Reduction of multiple access interference in OCDMA systems using a semiconductor based TPA device [PDF]
, 2007 The authors present a simulation model and results for a four user OCDMA system operating at an overall data rate of 4 Gb/s (4 x 1 Gb/s). The work presents the novel use of a nonlinear detector based on TPA for simultaneous thresholding and detection in ...
Barry, Liam P. +5 more
core +2 more sources
Applied Sciences, 2018 We propose an intelligently structured receiver to achieve high-speed transmissions over optical code-division multiple access (OCDMA) networks. Employing spectral-amplitude coding (SAC) reduces multiuser interference (MUI) in OCDMA, but the network bit ...
Kai-Sheng Chen +2 more
doaj +1 more source
Performance Enhancement of SPD Technique in SAC-OCDMA Systems
IOSR Journal of Electronics and Communication Engineering, 2014 This paper presents single photodiode as an effective technique for eradicating the effects of PIIN and MAI by cancelling interference effects in the optical domain in spectral amplitude coding optical code- division multiple-access(SAC-OCDMA)systems.
Ruchita Bajpai, Dr. Neelam Srivastava
openaire +1 more source
A 16-channel reconfigurable OCDMA/DWDM system using continuous phase-shift SSFBGs [PDF]
, 2007 We demonstrate a reconfigurable 16-channel optical code-division multiple access (OCDMA)/dense wavelength division multiplexing (DWDM) system (4 OCDMA times 4 DWDM times 625 Mb/s) based on novel 31-chip, 40 Gchip/s quaternary phase coding gratings ...
Ibsen, M. +4 more
core +1 more source
Feasibility study of SOA-based noise suppression for spectral amplitude coded OCDMA [PDF]
, 2007 We investigate the benefits of employing a saturated SOA to reduce optical noise in an incoherent light OCDMA system. In the context of spectrum-slicing, SOA-based noise suppression has shown significant potential for enhancing the signal quality of ...
Horak, P. +9 more
core +2 more sources