Interference mitigation in heterogeneous networks using Fractional Frequency Reuse

2016 ◽  
Author(s):  
Mayada Osama Mohamed ◽  
Bassant Abdelhamid ◽  
Salwa El Ramly
Keyword(s):  
Heterogeneous Networks ◽  
Interference Mitigation ◽  
Frequency Reuse ◽  
Fractional Frequency Reuse ◽  
Fractional Frequency

scholarly journals Enhanced fractional frequency reuse approach for interference mitigation in femtocell networks

2020 ◽  
Vol 9 (4) ◽  
pp. 1638-1645
Author(s):  
Abdullah H. Alquhali ◽  
Mardeni Roslee ◽  
Mohamed Babikir Abdelgadir ◽  
Khaldon Kordi ◽  
Khalid S. Mohamed
Keyword(s):  
Wireless Communication ◽  
Communication Networks ◽  
Interference Mitigation ◽  
Frequency Reuse ◽  
Fractional Frequency Reuse ◽  
Wireless Communication Networks ◽  
Femtocell Networks ◽  
Small Cell Networks ◽  
Fractional Frequency ◽  
Cell Networks

Small cell networks are expected to heavily be deployed in wireless communication networks due to it ability to enhance signals quality and spectrum utilisation. However, interference is posing a major threat to wireless communication especially cellular femtocell networks whereby its performance is degraded in dense deployment areas. For this reason, an enhanced fractional frequency reuse approach is proposed in this paper to mitigate the interference in femtocell networks. This is achieved by dividing the service area and frequency into three regions and three sets whereby each set is allocated different frequency set. The femtocell location is later obtained and assigned frequency in accordance to the region. The proposed approach helps in reducing the interference, boost the signal to interference plus noise (SINR), and enhance the throughput.

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.

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