Optimizing WiMAX: Mitigating Co-Channel Interference for Maximum Spectral Efficiency
Journal Title: Mehran University Research Journal of Engineering and Technology - Year 2016, Vol 35, Issue 4
Abstract
The efficient use of radio spectrum is one of the most important issues in wireless networks because spectrum is generally limited and wireless environment is constrained to channel interference. To cope up and for increased usefulness of radio spectrum wireless networks use frequency reuse technique. The frequency reuse technique allows the use of same frequency band in different cells of same network considering inter-cell distance and resulting interference level. WiMAX (Worldwide Interoperability for Microwave Access) PHY profile is designed to use FRF (Frequency Reuse Factor) of one. When FRF of one is used it results in an improved spectral efficacy but also results in CCI (Co-Channel interference) at cell boundaries. The effect of interference is always required to be measured so that some averaging/ minimization techniques may be incorporated to keep the interference level up to some acceptable threshold in wireless environment. In this paper, we have analyzed, that how effectively CCI impact can be mitigated by using different subcarrier permutation types presented in IEEE 802.16 standard. A simulation based analysis is presented wherein impact of using same and different permutation base in adjacent cells in a WiMAX network on CCI, under varying load conditions is analyzed. We have further studied the effect of permutation base in environment where frequency reuse technique is used in conjunction with cell sectoring for better utilization of radio spectrum.
Authors and Affiliations
Abdul Qadir Ansari, Abdul Latif Memon, Imran Ali Qureshi
Keywords
Related Articles
- EP ID EP183744
- DOI -
- Views 110
- Downloads 0
Utility of CK Metrics in Predicting Size of Board-Based Software Games
Software size is one of the most important inputs of many software cost and effort estimation models. Early estimation of software plays an important role at the time of project inception. An accurate estimate of softwar...
An Investigation of Prototyping Technique in Pakistani Software Industry
Requirements elicitation is one of the important and major activities within the Requirements Engineering phase. There are different techniques used for requirement elicitation process. Selection of any requirements elic...
Assurance due to the Usage of Two ERP Methods: Microsoft Dynamics AX and SAP
A speculation-based resource organising technique aids agencies in routing information across many industrial components. Organisation functions through IT (Information Technology) with the use of the latest technology h...
An Intelligent Service-Based Layered Architecture for eLearning and eAssessment
The rapid advancement in ICT (Information & Communication Technology) is causing a paradigm shift in eLearning domain. Traditional eLearning systems suffer from certain shortcomings like tight coupling of system componen...
Multi-Touch Collaborative Gesture Recognition Based User Interfaces as Behavioral Interventions for Children with Autistic Spectrum Disorder: A Review
This paper addresses UI (User Interface) designing based on multi-touch collaborative gesture recognition meant for ASD (Autism Spectrum Disorder) - affected children. The present user interfaces (in the context of behav...