Optical code division multiple access system (OCDMA) has been important with increasing demands of high capacity and speed for communication in optical networks. Due to OCDMA technique high efficiency is achieved, hence fiber bandwidth is fully used . .In this paper we will focus on different codes i.e MD (Multi Diagonal ) FCC (Flexible cross correlation),DCS (Dynamic cyclic shift) code with BE...

We propose and experimentally demonstrate a novel architecture for interfacing and transmitting a Gigabit Ethernet (GbE) signal using asynchronous incoherent optical code division multiple access (OCDMA). This is the first such asynchronous incoherent OCDMA system carrying GbE data being demonstrated to be working among multi-users where each user is operating with an independent clock/data rat...

Recently, an alternative multiple access scheme was proposed by Li Ping. Its ability to separate the users accessing the common time and frequency resource is solely based on chip-level interleaving and it is therefore referred to as IDMA (interleavedivision multiple-access). Our contribution in this paper is to combine OCDMA (CDMA with orthogonal spreading sequences) with IDMA to obtain a new ...

In this paper we consider an optical code division multiple access (OCDMA) indoor wireless communication system using spectral encoding and evaluate its performances in cases of classical OCDMA, dynamic OCDMA and OCDMA with deconvolution. We present an analysis of the receiver movement influence on the indoor wireless communications system performances. As the receiver moves increasingly away f...

The demand for efficient optical communication systems has fuelled considerable research in developing techniques for eradicating phase-induced intensity noise (PIIN) in spectral-amplitude coding optical code-division multiple-access (SAC-OCDMA). This paper investigates the use of modified-AND subtraction detection technique to mitigate PIIN in SAC-OCDMA systems. The simulation results show tha...

In this paper, we present the impact of an EDFA (Erbium Doped Fibre Amplifier) for high data rate in Spectral Amplitude Coding Optical Code Division Multiple Access (SAC-OCDMA) networks. A Single photodiode (SPD) detection structure for SACOCDMA system is presented. The SPD detection can be flexibly constructed for any weight and number of users by using a single photodiode. Several advantages ...

In this paper the performance of two coding techniques named Modified Prime Sequence Codes (MPSC) and Superimposed Cyclic Optical Orthogonal Codes (SCOOC) is compared for Optical Code Division Multiple Access (OCDMA) system. A realistic simulation model of OCDMA system is designed for analyzing the performance of these codes. The performance analysis in terms of bit error rate, quality factor i...

Optical Code Division Multiple Access (OCDMA) is the technique to share a wide bandwidth among a large number of users, OCDMA combines high bandwidth Fiber optic media with flexibility of OCDMA, to provide high-speed connectivity. Multiple Access Interference (MAI) is the main source of performance degradation in OCDMA system .MAI is such a type of interference which caused by multiple cellular...

This paper simulates and analyzes noise of multimedia transmission in a flexible optical code division multiple access (OCDMA) computer network with different quality of service (QoS) requirements. To achieve multimedia transmission in OCDMA, we have proposed strict variable-weight optical orthogonal codes (VW-OOCs), which can guarantee the smallest correlation value of one by the optimal desig...