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We consider a neuronal network model where an external stimulus excites some neurons, which in turn activate other neurons in the network via synapse. We find that the regularity in macroscopic spiking activity of the whole neuronal network maximizes at a certain level of intrinsic noise. A similar resonant behavior, referred to as coherence resonance, is also observed with respect to the stimulus...
In this article the cross-platform software and hardware solution for LTE key performance indicators optimization are developed. There are two important conflicting indicators are explained and optimized — LTE user's throughput and cell throughput versus different power control parameter settings such as nominal power per resource block and alpha for fractional power control. The results graphically...
Different self-optimization methods are used in LTE network including load optimization, coverage and capacity optimization, dynamic correction of mobility parameters and automatic control of inter-cell interference. In existing mobile communication networks optimization of handover procedure is performed manually over time (days, weeks). Such approach is not satisfactory because the optimization...
The frequency reuse mechanism and code division multiple access are not used in LTE networks that leads to simultaneous operating of multiple subscribers (or base stations if we are talking about downlink direction) in the same part of spectrum. It produces the high level of inter-cell interference in both directions. Before making the fine tuning of network parameter settings it is necessary to make...
A mobile network operators design LTE networks with help of a radio propagation models (Okumura-Hata, Walfisch-Ikegami, etc.). One of the most common model used in determining the radio coverage in LTE networks is COST 231 Hata. Tuning of the model is carried out using large number of measurement records to increase the accuracy of the path loss prediction. The path loss predictions of tuned model...
The investigation of the LTE traffic channel blocking probability is presented in this paper. It is very important problem related to the effective utilization of physical resources in multiservice LTE networks. There will be shown the key motivation of moving to the direction of introducing the dynamic signaling and traffic channel resource relocation based on user demand.
This paper is aimed to show the efficiency of downlink control channel (PDCCH — Physical Downlink Control Channel) utilization in LTE networks. The dramatic challenge is related to very typical case when there is no signaling resources to assign the traffic channels for users. This problem is called blocked PDCCH. In this article we are going to show the results of simulation reflecting the LTE network...
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