A5031860489- Advanced Wireless Communication Techniques
- graph theory and CDMA systems
- Coding theory and cryptography
- Wireless Communication Networks Research
- Optical Network Technologies
- PAPR reduction in OFDM
- Antenna Design and Analysis
- Error Correcting Code Techniques
- Microwave Engineering and Waveguides
- Advanced Power Amplifier Design
- Blind Source Separation Techniques
- Advanced Antenna and Metasurface Technologies
- Metamaterials and Metasurfaces Applications
- Energy Harvesting in Wireless Networks
- Wireless Body Area Networks
- Optical Systems and Laser Technology
- Radio Frequency Integrated Circuit Design
- Advanced Photonic Communication Systems
- Cellular Automata and Applications
- Advanced Combinatorial Mathematics
- Advanced Data Compression Techniques
- Cooperative Communication and Network Coding
- Advanced Adaptive Filtering Techniques
- Multiple Myeloma Research and Treatments
- Advanced Wireless Network Optimization
Université de Saida Dr.Moulay Tahar
2013-2024
University Ferhat Abbas of Setif
2020
Université Djilali de Sidi Bel Abbès
2006-2011
University of Guelma
2005
Abstract In this paper, a novel zero cross correlation (ZCC) code is proposed for spectral amplitude coding-optical division multiple access (SAC-OCDMA) systems. The construction method starts from the identity matrix and has several benefits summarized in both simplicity flexibility. presents also an adapted (or accepted) length SAC-OCDMA systems high SNR value that reaches respectively 3.18 1.84 times of system capacity comparing to other existed codes such as modified quadratic congruence...
Abstract This paper introduces a novel code called two dimensional Pascal’s triangle zero cross correlation (2D-PTZCC) for spectral/spatial coding with its structure of the corresponding system to implement in spectral amplitude optical division multiple access (SAC-OCDMA) systems The is derived from one (1D-ZCC) using rule. analytical results prove that proposed has totally removed interference (MAI), addition phase induced intensity noise (PIIN) influence highly reduced due (ZCC) property....
In order to solve the problem of one-dimensional code length, two-dimensional spatial phase induced intensity noise PIIN effect, improved system capacity, and increased number simultaneous users, a new three-dimensional spectral/time/spatial variable weight zero cross correlation for non-coherent spectral amplitude coding-optical division multiple access (3D-VWZCC-SAC-OCDMA) is proposed in this paper. Its construction based on (1D) sequence (2D) temporal/spatial sequences, which are...
Abstract This paper presents for non-coherent Optical Code Division Multiple Access (OCDMA) systems a new optical code namely Two-Dimensional Half Spectral/Spatial Zero Cross Correlation (2D-HSSZCC) based on One-Dimensional (1D-ZCC) already developed using block matrices characterized by high capacity. The results of simulation show that the use eliminates totally Interferences (MAI) due to zero cross correlation flexibility, and less complexity construction which produces very low bit error...
In OFDM systems, peak-to-average power ratio (PAPR) reduction of the signal is one main challenges that need to be overcome in order use transmitter an efficient manner. As attractive techniques, interleaving can used PAPR for multicarrier signals without spectrum distortion. this paper, authors propose extend possibilities improve reduction, a new coding interleaver keys at and robust decoding procedure receiver. not degrade data rate, null subcarriers transmit side information receiver...
Abstract This article presents a novel encoder technique of spectral amplitude coded multiple access (SAC-OCDMA) systems. The proposed is based on two orthogonal polarization states the same one dimensional optical code. method usually applied to increase number simultaneous users in network, and it can double potential against one-dimensional results obtained this work show that zero cross-correlation code accommodate more simultaneously for typical bit error rate communication system ${\...
PAPR (peak-to-average power ratio) reduction of the transmitted signal is one main challenges and issues concern in a OFDM (Orthogonal Frequency Division Multiplexing) system, which affect efficiency Radio-Frequency Power Amplifier (RF PA). As attractive techniques, interleaving can be used for multicarrier signals without spectrum distortion but common drawback these methods transmission Side Informations (SI) to receiver, degrades data rate. In this paper, we propose method using technique...
Orthogonal Frequency Division Multiplexing (OFDM) has been shown to be an effective technique in wireless communications. It successfully used for Radio applications. However, reducing its main drawback known as PAPR (Peak-to-Average Power Ratio) is one of the challenges use efficiently High Amplifier at transmitter. As attractive technique, interleaving method can reduction multicarrier signals without spectrum distortion, but with additional Side-Information. In this paper, we propose...
This paper introduces and discusses the study of a new concept for SIW array antenna development. conducted development is based on three designs, two them related to 1x2 arrays fed by line, combined with inset last designed 2X2 feed line. All these structures are give dual-band at (Ku - K) bands enhanced gain bandwidth. The 2x2 has high gain, it consists four cavities staggered patches 90° phase shift, which using microstrip line shielded vias. designs were full-wave simulator ANSYS HFSS...
In this paper, we propose a novel idea for improvement performances of the leader M-BCJR algorithm functioning in low complexity. The basic consists to localize error instant possibility, and then increase complexity around moment. We also an easy important early localisation erroneous moments. call new Z-MAP. simulations show that is significant. Z-MAP turbo decoding are so close full MAP-BCJR performances. Furthermore, same M-BCJR. So, optimal version algorithm.