Results 11 to 20 of about 2,223,777 (199)
Symbol and Bit Error Rates Analysis of Hybrid PIM-CDMA [PDF]
EURASIP Journal on Wireless Communications and Networking, 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 Z., See C. K.
doaj +3 more sources
Improving Multi Access Interference Suppression in Optical CDMA by using all-Optical Signal Processing [PDF]
Telfor Journal, 2013 This paper presents the study of a novel all-optical method for processing optical CDMA signals towards improving suppression of multi access interference. The main focus is on incoherent OCDMA systems using multiwavelength 2D-WH/TS codes generated using
T. B. Osadola, S. K. Idris, I. Glesk
doaj +5 more sources
MIMO MC-CDMA Systems over indoor optical wireless communication channels [PDF]
, 2011 Optical wireless communication systems offer a number of advantages over their radio frequency counterparts. The advantages include freedom from fading, freedom from spectrum regulations and abundant bandwidth.
Alsaadi, Fuad Eid S
core +6 more sources
On Optical CDMA MAC Protocols [PDF]
2006 IEEE International Symposium on Circuits and Systems, 2006 A media access control (MAC) protocol for optical code-division multiple-access (CDMA) packet networks with variable length data traffic is proposed. This protocol exhibits a sliding window with variable size. A model for interference level fluctuation and an accurate analysis for channel usage are presented. Both multiple access interference (MAI) and
M. A. A. Mohamed +2 more
openaire +2 more sources
Applied Sciences, 2020 The purpose of this article is to propose a new configuration based on OCDMA and Fast-OFDM techniques for access network applications. A hybrid intensity modulation with direct detection, fast orthogonal frequency-division multiplexing–code division ...
Hichem Mrabet
doaj +1 more source
Multi-user MIMO CDMA systems using complete complementary sequences. [PDF]
, 2006 The authors propose a novel use of complete complementary (CC) sequences for increased spectral efficiency in a multiple-input–multiple-output (MIMO) code division multiple access (CDMA) system.
Khirallah, C. +3 more
core +5 more sources
IEEE Journal of Selected Topics in Quantum Electronics, 2007 This paper describes the InP platforms for photonic integration and the development on these platforms of an optical code division multiple access (O-CDMA) system for local area networks. We demonstrate three building blocks of this system: an optical pulse source, an encoder/decoder pair, and a threshold detector.
Broeke, Ronald G. +14 more
openaire +2 more sources
Improvement of the Performance of OCDMA By Using Error Correction Code [PDF]
Engineering and Technology Journal, 2009 In this paper a new approach is proposed for enhancement of the datatransmission optical communication systems by applying CDMA technique based error detection and correction code.
Hosham Salim, JafarM. Daif
doaj +1 more source
Asymmetrically Clipped Optical Hadamard Coded Modulation (ACO-HCM)
IEEE Photonics Journal, 2023 In many optical wireless communications systems, power efficiency is paramount. In others, flexibility is important. To achieve these goals, this paper presents a novel transmission scheme dubbed asymmetrically clipped optical Hadamard coded modulation ...
Henrik Schulze, Peter A. Hoeher
doaj +1 more source
Optical CDMA via temporal codes [PDF]
IEEE Transactions on Communications, 1992 The authors provide an analysis of the performance of optical orthogonal codes in an optical code division multiple access (CDMA) network by considering the probability distribution of the interference patterns. It is shown that the actual performance is close to a previous estimate.
Murat Azizoglu, Jawad A. Salehi, Ying Li
openaire +1 more source