An efficient burst packing algorithm for OFDMA systems

Abstract

Orthogonal Frequency Division Multi p le Access (OFDMA) targets to p rovide broadband connectivity to wide area coverage in mobile environments, which results in significant design challenges in the Medium Access Control (MAC) layer to p rovide an efficient resource allocation in a cost-effective manner. This p a p er p ro p oses a two dimensional (2D) Burst Packing (BP) algorithm for OFDMA down Link (DL) subframe that can p rovide the service p roviders with an efficient, fast, flexible and high s p ectral efficiency method to allocate system resources among the Mobile Stations (MSs). The p ro p osed Orientation-Based Burst Packing algorithm uses the Orientation Factors (OF) of the bursts as a criteria to achieve the challenging issues in the BP p roblem. The simulation results show that the p ro p osed algorithm can achieve a high p acking efficiency u p to 99.2 % when the burst size ratio (BSR) is 50 %.

An efficient downlink mapping algorithm for AMC mode in WiMAX systems

“…Most of the solutions such as OCSA [2], eOCSA [3], OBBP [4], and MaxRectangle [5] were proposed for PUSC mode. Efficient Downlink Bandwidth Allocation (EDBA) [6] was designed for AMC mode.…”