1 research outputs found
A system level simulation study of WiMAX
Ankara : The Department of Electrical and Electronics Engineering and the Institute of Engineering and Sciences of Bilkent University, 2010.Thesis (Master's) -- Bilkent University, 2010.Includes bibliographical references leaves 56-58.In this thesis, we implement a WiMAX system level simulator compliant with the
evaluation methodology document published by the IEEE 802.16m Task Group.
We study the PHY abstraction of polar codes and integrate polar codes into
the simulator. We compare the system level performances of polar code and
convolutional turbo code (CTC) and observe that CTC outperforms polar code.
On the simulator, we study the downlink (DL) performance of WiMAX under
various configurations such as scheduling methods, subchannelization methods,
and frequency reuse models. We study there types of scheduling methods, namely
round robin (RR) scheduling, proportional fair (PF) scheduling, and maximum
sum rate (MSR) scheduling. We observe that MSR scheduling has the best
throughput performance but does not support the users far from the base station.
We study three frequency reuse models, namely 1×3×1, 1×3×3, and 3×3×1.
We observe that 1 ×3×1 reuse model has the best throughput performance and
maximum spectral efficiency is obtained in 1 × 3 × 3 reuse model. We study two
subchannelization methods, namely PUSC and band AMC. We observe that in
low mobility cases, band AMC outperforms PUSC and in high mobility cases,
PUSC is better than band AMC.Başçiftçi, Yüksel OzanM.S