This paper presents a synchronous transmission WDMA protocol for passive star topology. The network architecture adopts the multi-channel control architecture (MCA) [2] to exchange control information. In our analysis, we exploit the effect of propagation delay latency to improve the system utilization by dynamically dividing the MCA into two groups of channels based on the knowledge of the sta...

The objective of this paper is to develop a tool to study the interaction between the cache coherence protocol and the media access protocol for a multiprocessor system in a wavelength division multiplexed star-coupled configuration. This simulation is modular for easy swapping of component functional specifications, and inter-module communication is achieved through a message passing facility....

Optical code division multiplexing (OCDM) is the other class of multiplexing techniques than time division multiplexing (TDM), wavelength division multiplexing (WDM) and space division multiplexing (SDM). OCDM has been proposed in mid ’70s. It has been long since OCDM remains outside the mainstream of research community of optical communications, however, possible scarcity of the wavelength res...

We propose the network on demand concept to yield the optical access network system that well handles the diversity in user demands and support technologies such as module and devices configuration. In this proposal, the network accommodation equipment, such as OLT needed for each service, is installed ‘virtually’ using WDM, and the physical rate can adapt to the user-demanded service rate by u...

This work presents a performance evaluation based on elaborated analytical expressions of error probability for broadband access networkin the case of a combined technique of dense wavelength division multiplexing (DWDM) and one dimensional optical orthogonal codes (1D-OOC). Optical sources with relatively large spectrum has been considered and simulated.Besides the Multiple Access Interference...

A multiprocessor system with a large number of nodes can be built at low cost by combining the recent advances in high capacity channels available through optical ber communication. A highly fault tolerant system is created with good performance characteristics at a reduction in system complexity. The system capitalizes of the self-routing characteristic of wavelength division multiple access t...

A new media access protocol is presented for time and wavelength division multiplexed optical passive star networks. The protocol is based on a new \Bus-Mesh" virtual topology. The network provides minimum latency and high throughput while requiring only a single xed wavelength transmitter and receiver at each station. The use of non-agile, xed wavelength devices, readily available with current...

In this paper optical code-division multiple-access (OCDMA) packet network is considered, which offers inherent security in the access networks. Two types of random access protocols are proposed for packet transmission. In protocol 1, all distinct codes and in protocol 2, distinct codes as well as shifted versions of all these codes are used. O-CDMA network performance using optical orthogonal ...

Code Division Multiple Access (CDMA) is probably the most interesting multiple access method provided by spread spectrum technology. CDMA refers to a multiple access method in which the individual terminals use spreadspectrum techniques and occupy the entire spectrum whenever they transmit. This paper focuses on direct-sequence spread-spectrum principles (processing gain, spreading, de-spreadin...