Abstract
In Heterogeneous Network (HetNet), the femtocell (HeNB) has been deployed by the telecommunication industries to provide extensive coverage as well as capacity in an indoor. These HeNBs are Customer Premise Equipment (CPE) which is randomly used in co-channel with macrocell (MeNB) and causes the Co-Tier Interference (CTI) in OFDMA. The effect of CTI in OFDMA systems can lead the system throughput degradation and service disruption. Because of quick direct changing features in Rayleigh channel, it is compulsory to succeed the satisfactory performance. The signal-to-interference noise ratio (SINR) is arbitrary which drives the highest capacity to be an irregular variable. However, this paper derives the expressions of outage probabilities based on the hybrid Genetic Algorithm (GA) with biogeography based dynamic subcarrier allocation (HGBBDSA) algorithm is implemented in reducing the outage probability. The outage probability countenance is expressed for the moment-generating function of the total SINR at the receivers end. The simulation results demonstrate that the HGBBDSA can lessen the outage to 45 % than existing methods.DOI: http://dx.doi.org/10.5755/j01.eie.23.5.19249
Highlights
Wireless operators have turned to the use of Third Generation Partnership Project (3GPP) Long Term Evolution-Advanced (LTE-A) in Heterogeneous Network (HetNet), in the attempt to provide better spectral efficiency, reduced delay on account of its Internet Protocol (IP) structural design, along with greater throughputs
signal-to-interference noise ratio (SINR) become random that leads the maximum capacity to be a random variable. These received signals should be defined through the probability models. Considering these points. outage probability indicates the probability that a rate is not supported due to variable of SINR as well as User Equipment’s (UEs) demand [6]. 3GPP-LTE-A is concocting frequency reuse to achieve throughput and simplifying the radio network planning [7]
This paper studied the performance of OFDMA system based HetNet with dynamic subcarrier allocation
Summary
Wireless operators have turned to the use of Third Generation Partnership Project (3GPP) Long Term Evolution-Advanced (LTE-A) in HetNet, in the attempt to provide better spectral efficiency, reduced delay on account of its Internet Protocol (IP) structural design, along with greater throughputs. The Cellular networks LTE/LTE-A faces the imperfect network coverage in indoor due to the multipath channel fading To abate such challenge, HeNBs are deployed in HetNets (Fig. 1), which can extend the capacity up to 1.5 Gbps in LTE-A systems and so . Owing to the fast channel changing features in Rayleigh radio channel, it is highly necessary to achieve the satisfactory communication performance, which is typically a certain least possible signal level [4], [5] In these fading channels, the received signal depends on the channel since the power is random. Puh jl here isuh stated the interference scenario, uh indicates the HUE, ujnh ,S is the transmit power, uh,S is subcarrier allocation indicator, hujhn,S is the channel gain of HUE and serving HeNB, ts is the noise Puh jn is represented for indoor path loss, jn is the adjacent HeNB. This leads to maximum throughput for the association of HUE and HeNB
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