Abstract
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.
Highlights
Recent technologies rely on wireless communication to enhance the mobility factors and the overall performance because it grants fast delivery rates and financial low-costs
The results show that the proposed method is able to increase the throughput by 120% compared to their previous method, it helps to reduce the power consumption due to the decreased interference in downlink in same spectrumusage
In this paper, we propose an approach to mitigate the interference in femtocell networks by dividing the coverage area into three regions rather than two in the fractional frequency reuse approach
Summary
Recent technologies rely on wireless communication to enhance the mobility factors and the overall performance because it grants fast delivery rates and financial low-costs. In [12], a scheme is presented to decrease both downlink cross-tier and co-tier interference and boost up the spectral efficiency for orthogonal frequency-division multiple access (OFDMA) based closed access femtocell networks. The outcome of simulation demonstrated high spectral efficiency as the probability of cross-tier spectrum reuse becomes higher.femtocell networks. The major cause of ICI is the asynchronous arrival of macrocell UE signals at the femtocell It has been concluded a boost in received ICI power of femtocell is seen when the center frequency is lower. In [15], the authors tried to mitigate the cross-tier (co-channel) interference between macrocells and femtocells They utilize frequency reuse coupled with pilot sensing via a frequency sharing structure to achieve the results. More details on the previous work concerning the interference management in general are provided in the subsequent section
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