Simple Capacity Estimations in WIMAX/802.16 System

Abstract

In this paper, we propose some simple capacity estimations for WiMAX/ IEEE 802.16 system. The OFDM Physical layer of 802.16 is considered. We compare between the nowclassical data rates values based on OFDM considerations and data rates obtained in simulation taking into account inter-cell interference. Figures are given for various scenarios of frequency reuse (1x1 and 1x3) and services (real-time and FTP) allowing interesting observations about WiMAX radio efficiency. These results can be used as an order of magnitude of more realistic WiMAX performance results.

Performance analysis of 3G and WiMAX as cellular mobile technologies

“…From the basic assumptions of the PHY layer, the basic OFDM parameters are calculated. Different OFDM parameters used are mentioned in [6] The WiMAX throughput given in [7] is used taking B is the bandwidth in use 3.5 MHz; sampling rate, n, taken is (8/7), 256; NFFT is the length of Fast Fourier Transformation, 192; Nused is the number of used carriers, code rate is the rate of channel coding and m is the modulation efficiency. Spectrum Efficiency= Effective throughput /Bandwidth…”

Comparison of WiMAX scheduling algorithms and proposals for the rtPS QoS class

“…These services can have different constraints such as the traffic rate, maximum latency, and tolerated jitter. IEEE 802.16 power control and other capacity estimations were studied in [3].…”