scholarly journals LTE Network Analysis in Frequency Reuse Recycling Techniques

2021 ◽  
Vol 29 (1) ◽  
Author(s):  
Muhammad Sabir Hussain ◽  
Nasri Suleiman ◽  
Nor Kamariah Noordin
Keyword(s):  
Frequency Distribution ◽  
Frequency Reuse ◽  
Fractional Frequency Reuse ◽  
Fractional Frequency ◽  
A Cell ◽  
Promising Solution ◽  
User Throughput ◽  
Inter Cell Interference ◽  
Improve Device ◽  
Recycling Techniques

In recent years, several researchers have embraced fractional frequency (FF) reuse as a strategy for resolving the inter-cell and co-channel interferences of adjacent cells (ICI, CCI) as the number of wireless networks grows. This technique is focused on the cell division of two parts, the inner and the outer, which enables multiple frequency bands to be assigned. The frequency advantages can be completely used in each inner zone, since there is no inter-cell disturbance for consumers in inner regions. According to this effective usage of the frequency spectrum available, FF will reduce the interruption of the channel and improve device efficiency. This manuscript presents a comprehensive study of different mechanisms to select the optimal FF scheme based on the user throughput. The analysis was conducted in order to obtain the optimal internal and external range for the cells as well as the optimal frequency distribution between the areas of the FR, Fractional Frequency Reuse 1 (FFR1) and Fractional Frequency Reuse 2 (FFR2) and evaluating their outputs and their number of users. In detail the overall consumer efficiency through the configured frequency distribution is analyzed. The FFR is a resource allocation technique that can effectively mitigate inter-cell interference (ICI) in LTE based HetNets and it is a promising solution. The proposal also employs high number sectors in a cell, low interference and good frequency reuse. The processes are tested by way of multiple modeling simulations.

scholarly journals Dynamic Fractional Frequency Reuse Diversity Design for Intercell Interference Mitigation in Nonorthogonal Multiple Access Multicellular Networks

2018 ◽  
Vol 2018 ◽  
pp. 1-18 ◽  
Author(s):  
Kashif Mehmood ◽  
Muhammad Tabish Niaz ◽  
Hyung Seok Kim
Keyword(s):  
Multiple Access ◽  
Interference Mitigation ◽  
Frequency Reuse ◽  
Fractional Frequency Reuse ◽  
Superposition Coding ◽  
Intercell Interference ◽  
Fractional Frequency ◽  
Distinct Frequency ◽  
User Throughput ◽  
The Individual

Nonorthogonal multiple access (NOMA) is one of the few promising techniques that can ensure the achievement of benefits foreseen in next-generation 5G wireless networks and beyond. By using superposition coding, NOMA allows multiple users to share the same time and frequency resources, thereby enhancing user connectivity, spectral efficiency, and a considerable increase in user throughput. Interference mitigation is an important consideration in NOMA and is considerably more influencing in multicellular environments. First, a brief description of the impairments that can arise in a NOMA cellular network along with responsible factors is provided. Second, different approaches adopted to minimize these impairments are discussed. Finally, a possible solution is proposed that consists of a coordinated approach between the individual cells in the NOMA domain to minimize interferences and improve user throughput. Adaptive fractional frequency reuse (FFR) is used to allocate distinct frequency resources to edge users of different cells to minimize intercell interference in NOMA. Simulation results prove that the proposed NOMA scheme plays an important role in minimizing impairment effects and enhancing the SINR and the throughput performance of edge users while ensuring fairness in its design.

scholarly journals Hungarian Mechanism based Sectored FFR for Irregular Geometry Multicellular Networks

2021 ◽  
Vol 9 (2) ◽  
pp. 313-325
Author(s):  
Rahat Ullah ◽  
Zubair Khalid ◽  
Fargham Sandhu ◽  
Imran Khan
Keyword(s):  
Cellular Networks ◽  
Frequency Reuse ◽  
Fractional Frequency Reuse ◽  
Fractional Frequency ◽  
Achievable Throughput ◽  
User Simulation ◽  
Sum Rate ◽  
Irregular Geometry ◽  
The Individual ◽  
Inter Cell Interference

The growing demands for mobile broadband application services along with the scarcity of the spectrum have triggered the dense utilization of frequency resources in cellular networks. The capacity demands are coped accordingly, however at the detriment of added inter-cell interference (ICI). Fractional Frequency Reuse (FFR) is an effective ICI mitigation approach when adopted in realistic irregular geometry cellular networks. However, in the literature optimized spectrum resources for the individual users are not considered. In this paper Hungarian Mechanism based Sectored Fractional Frequency Reuse (HMS-FFR) scheme is proposed, where the sub-carriers present in the dynamically partitioned spectrum are optimally allocated to each user. Simulation results revealed that the proposed HMS-FFR scheme enhances the system performance in terms of achievable throughput, average sum rate, and achievable throughput with respect to load while considering full traffic.

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