Picture water droplets

Developing mathematical theories of the physical world: Open Access research on fluid dynamics from Strathclyde

Strathprints makes available Open Access scholarly outputs by Strathclyde's Department of Mathematics & Statistics, where continuum mechanics and industrial mathematics is a specialism. Such research seeks to understand fluid dynamics, among many other related areas such as liquid crystals and droplet evaporation.

The Department of Mathematics & Statistics also demonstrates expertise in population modelling & epidemiology, stochastic analysis, applied analysis and scientific computing. Access world leading mathematical and statistical Open Access research!

Explore all Strathclyde Open Access research...

Variable weight Khazani-Syed code using hybrid fixed-dynamic technique for optical code division multiple access system

Anas, Siti Barirah Ahmad and Seyedzadeh, Saleh and Mokhtar, Makhfudzah and Sahbudin, Ratna Kalos Zakiah (2016) Variable weight Khazani-Syed code using hybrid fixed-dynamic technique for optical code division multiple access system. Optical Engineering, 55 (10). ISSN 0091-3286

[img]
Preview
Text (Seyedzadeh-etal-OE-2016-Variable-weight-Khazani-Syed-code-using-hybrid-fixed-dynamic)
Seyedzadeh_etal_OE_2016_Variable_weight_Khazani_Syed_code_using_hybrid_fixed_dynamic.pdf
Accepted Author Manuscript

Download (873kB) | Preview

Abstract

Future Internet consists of a wide spectrum of applications with different bit rates and quality of service (QoS) requirements. Prioritizing the services is essential to ensure that the delivery of information is at its best. Existing technologies have demonstrated how service differentiation techniques can be implemented in optical networks using data link and network layer operations. However, a physical layer approach can further improve system performance at a prescribed received signal quality by applying control at the bit level. This paper proposes a coding algorithm to support optical domain service differentiation using spectral amplitude coding techniques within an optical code division multiple access (OCDMA) scenario. A particular user or service has a varying weight applied to obtain the desired signal quality. The properties of the new code are compared with other OCDMA codes proposed for service differentiation. In addition, a mathematical model is developed for performance evaluation of the proposed code using two different detection techniques, namely direct decoding and complementary subtraction.