Article

Journal of Engineering Research

, 2:16

First online:

Open Access This content is freely available online to anyone, anywhere at any time.

Dynamic spectrum allocation in orthogonal frequency-division multiplexing optical networks

  • Anwar AlyatamaAffiliated withComputer Engineering Department, Kuwait University Email author 

Abstract

Orthogonal frequency-division multiplexing has emerged as a technology that can meet the requirements of diverse, bandwidth-intensive applications envisioned in future optical networks. In orthogonal frequency-division multiplexing optical networks, multiple subcarriers can be allocated to accommodate both subwavelength and superwavelength traffic. An important factor in the success of orthogonal frequency-division multiplexing is routing and spectrum allocation. In this paper, we propose two spectrum allocation algorithms for dynamic orthogonal frequency-division multiplexing optical-based networks: first-fit spectrum allocation starting from the spectrum boundary and spectrum partitioning. In spectrum partitioning, the spectrum is divided into multiple sectors, in which a subset of relative call type sizes compete for the subcarriers in opposite directions. We present simulation results to show the efficiency of our new algorithms.

Keywords

Orthogonal frequency-division multiplexing Routing and spectrum allocation