Symbol and Bit Error Rates Analysis of Hybrid PIM-CDMA [PDF]
, 2005 A hybrid pulse interval modulation code-division multiple-access (hPIM-CDMA) scheme employing the strict optical orthogonal code (SOCC) with unity and auto- and cross-correlation constraints for indoor optical wireless communications is proposed. In this
Ghassemlooy, Zabih +3 more
core +1 more source
Manchester Return-to-Zero On–Off Keying Modulation for Free-Space Optical Communication
PhotonicsThis paper proposes a Manchester return-to-zero on–off keying (M-RZ-OOK) modulation for free-space optical (FSO) communication. M-RZ-OOK modulation is achieved by introducing Manchester coding into the RZ-OOK format.
Wenhao Zong +4 more
doaj +1 more source
Low Power FPGA Implementation of a Smart Building Free Space Optical Communication System
Photonics, 2022 Free Space Optical (FSO) communication systems have extensively invaded the speed of smart city evolution due to the current surge in demand for wireless communication spots that can match recent challenges due to high technical leaps in smart city ...
Rehab Ali +4 more
doaj +1 more source
An 80 Gb/s Silicon Photonic Modulator Based on the Principle of Overlapped Resonances
IEEE Photonics Journal, 2017 We report a silicon photonic modulator based on a Mach–Zehnder interferometer (MZI) loaded with a microring modulator (MRM) on one arm and a microring resonator (MRR) on the other arm.
Rui Li +7 more
doaj +1 more source
Bit error performance of diffuse indoor optical wireless channel pulse position modulation system employing artificial neural networks for channel equalisation [PDF]
, 2009 The bit-error rate (BER) performance of a pulse position modulation (PPM) scheme for non-line-of-sight indoor optical links employing channel equalisation based on the artificial neural network (ANN) is reported.
Ghassemlooy, Zabih +2 more
core +1 more source
Application and Analysis of Performance of DQPSK Advanced Modulation Format in Spectral Amplitude Coding OCDMA [PDF]
Mehran University Research Journal of Engineering and Technology, 2014 SAC (Spectral Amplitude Coding) is a technique of OCDMA (Optical Code Division Multiple Access) to encode and decode data bits by utilizing spectral components of the broadband source.
Abdul Latif Memon +2 more
doaj
Recent developments in indoor optical wireless systems [PDF]
, 2008 An overview of the developments in optical wireless systems viewed from the traditional communications viewpoint of transmitter, channel and receiver is presented.
Leeson, Mark S. +3 more
core +1 more source
Triple Space‐Polarization On–Off‐Key Modulation With AlN‐Based Tri‐Focal Metalens
Nanophotonics, Volume 15, Issue 18, 25 September 2026.An AlN tri‐focal metalens made of high‐temperature‐annealed AlN by integrating zone‐plate null rings into a polarization‐selective bifocal metalens. The incident light will be focused into two or three foci on the focal plane, each with a distinct polarization state.
Zhi‐Yan Lin +7 more
wiley +1 more source
Theoretical and Experimental Investigation of Differential Modulation and Detection in FSO Systems
PhotonicsIn free-space optical (FSO) communication systems, on–off keying (OOK) modulation is widely used due to its simplicity. However, systems applying OOK suffer from the BER floor in atmospheric turbulence channels, leading to persistently high BER even at ...
Hao Zhou +6 more
doaj +1 more source
Multi-Format Wavelength Conversion Using Quantum Dash Mode-Locked Laser Pumps
Photonics, 2015 We investigate and compare the performance of wavelength conversion for two different non-return-to-zero (NRZ) modulation formats at 40 Gb/s: on off keying (OOK) and differential phase-shift keying (DPSK).
Yousra Ben M’Sallem +3 more
doaj +1 more source