Interference mitigation in femtocell networks by efficient frequency reuse

2016 ◽  
Vol 5 (3/4) ◽  
pp. 248
Author(s):  
P. Prabhakaran ◽  
Ch. V.M.S.N. Pavan Kumar ◽  
S. Tamilselvan
Keyword(s):  
Interference Mitigation ◽  
Frequency Reuse ◽  
Femtocell Networks

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 Secondary Network Throughput Analysis Applying SFR in OFDMA-CR Networks

2021 ◽  
Author(s):  
Joydev Ghosh
Keyword(s):  
Power Level ◽  
Access Point ◽  
Frequency Reuse ◽  
Network Throughput ◽  
Base Stations ◽  
Frame Structure ◽  
Control Factor ◽  
Wireless Data ◽  
Femtocell Networks ◽  
Secondary Network

<div>In OFDMA femtocell networks, the licensed spectrum of the macro users (MUs) are available to the femto users (FUs), on the condition that they do not spark off notable interference to the MUs. We contemplate wireless data for femto user (FU) / secondary user (SU) in cognitive radio (CR) networks where the frame structure split up into sensing and data transmission slots. Moreover, we consider soft frequency reuse (SFR) technique to improve secondary network throughput by increasing the macrocell edge user power control factor. SFR applies a frequency reuse factor (FRF) of 1 to the terminal located at the cell centre for that all base stations (BSs) share the total spectrum. But for the transmission on each sub-carrier the BSs are confined to a certain power level. However, more than 1 FRF uses for the terminals near to the macrocell edge area. In this context, we conceptualize the cognitive femtocell in the uplink in which the femtocell access point (FAP) initially perceive by sensing to find out the availability of MU after that FAP revamps its action correspondingly. Appropriately, when the MU is sensed to be non-existent, the FU transmits at maximum power. In other respect, the FAP make the best use of the transmit power of the FU to optimize the secondary network throughput concern to outage limitation of the MU. Finally, effectiveness of the scheme is verified by the extensive matlab simulation.</div>

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