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(a) Mobile Cellular Network
Source publication
One of the important features of mobile cellular network is reuse of logical channels (frequency, time slot or code) which makes an extra burden to a network planar in their assignment among different cells. In real life this work is done in such a way to minimize both co-channel and adjacent channel interference. The tusk become more cumbersome un...
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Citations
... Considerando que los requerimientos de tráfico son cada vez mayores se plantea la necesidad de contar con esquemas de asignación de canales eficientes. Islam y Hossain (2004), propusieron un algoritmo, basado en coloreo de grafos, para optimizar la asignación de canales respetando las RCE a partir de la topología de la red representada por un grafo equivalente, el vector de demanda, la matriz de interferencias y la lista de canales. Naik y Wei (2004), han propuesto una metodología basada en el concepto de llamada en espera para mejorar el desempeño de los algoritmos de asignación dinámica de canales en redes celulares. ...
To improve the quality of service in cell systems, techniques of Dynamic Assignment Channels are used to reduce the probability of blocking calls. In this paper an algorithm of assignment channels is required to reduce the probability of blocking, extending the system capacity to add new calls. This is obtained by using an interchange of channels of current calls and reducing the restrictions of electromagnetic compatibility. According to this, the algorithm has to provide solutions of commitments between two different objectives; on the one hand reduce the amount of assignments, and on the other to do the same with the level of interference due to the flexible restrictions of electromagnetic compatibility. A heuristic focus based on the evolution paradigm is presented to solve the multi-objective optimization problem. Two evolutionary multi-objective algorithms (SPEAII y NSGA II) are compared by the use of two different metrics. The results show that the proposed methodology can be applied to different generations of mobile communication systems.
