Resource Optimisation for 3rd Generation Partnership Project (3GPP) Long Term Evolution OFDMA Downlink Interface Air

Ayoola Akinloye Akinniranye,Samson Adenle Oyetunji

doi:10.4236/wet.2013.44028

Abstract

This Paper describes the system model of the developed optimisation scheme which is implemented using a simulation package known as MATLAB. The 3rd Generation Partnership Project (3GPP) Long Term Evolution standard for the downlink air interface, Orthogonal Frequency Division Multiple Access (OFDMA) was adopted. Frequency Selective Rayleigh fading channel is considered as a model for real life scenario of the LTE Evaluation, operating in 5 MHz downlink bandwidth of OFDMA parameters as proposed in the standard. Simulation results show that, the inherent characteristics of a communication channel can be exploited and combined with the robustness of OFDMA to optimally allocate the radio resources. The optimal channel assignment of the dynamic allocation scheme exploited in this work meets the set target of high data rate and spectral efficiency.

Highlights

Wireless communication is enjoying a fast growth period in history which is coupled with technology improvements that permit its widespread deployment
Frequency Selective Rayleigh fading channel is considered as a model for real life scenario of the Long Term Evolution (LTE) Evaluation, operating in 5 MHz downlink bandwidth of Orthogonal Frequency Division Multiple Access (OFDMA) parameters as proposed in the standard
The channel model is as described for International Telecommunications Union (ITU) and for 5 MHz channel bandwidth with N = 512 size Fast Fourier Transform (FFT) as illustrated in Table 2 is implemented

Summary

Introduction

Wireless communication is enjoying a fast growth period in history which is coupled with technology improvements that permit its widespread deployment. That is the cellular concept developed by Bell Laboratories [1]. Mobile communication offers a full duplex communication using a radio to connect portable device to a dedicated Base station, which is connected to a switching network. The first generation of mobile communication, known as Advanced Mobile Phone System (AMPS), was deployed in 1983 [1]. The second generation (2G) of mobile communication is known as Global System for Mobile communication (GSM) which was deployed in the 1990s [1] with 9.6 kbps data rate. The International Telecommunications Union (ITU) developed a plan in 1995 [2]

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Conclusion