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In this paper, the authors present two algorithms, are based on fuzzy logic, conventional algorithm and Proposed algorithms. Both handoff algorithms are used average handoff factor to decide when to handoff and when not in case of high speed mobile terminals. Conventional algorithm is of two types, one is conventional I and other is conventional II. Also, proposed algorithm is of two types, one is proposed I and other is proposed II. The difference among these algorithms is its hysteresis margin. Proposed algorithms are used under the scenario of high speed trains. Proposed algorithm can make handoff efficient at speed of 270-350km/hr. also the probability of unnecessary handoff is reduced.
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