Improvement the Transmission Efficiency for Wireless Packet Communication Systems using Automatic Control for power and Time Slot Width of Slotted Non persistent ISMA Protocol
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Abstract
In packed communication systems which use a protocol, the protocol should perform the allocation of channels such that the transmission channel is used efficiently. Efficiency is usually measured in terms of channel throughput and the average transmission delay. The Slotted Nonpersistent ISMA protocol is one of random access protocols used in packed communication systems. In this research a Slotted Nonpersistent ISMA protocol Model with automatic control for power and time slot is proposed. the suggested algorithm enable the base station(access point) to control the protocol time slot length and transmission power in a dynamic way to control the normalized propagation delay d and to maintain all the uplink signals in the limit of captured power threshold (capture ratio) in order to control the throughput and the average transmission delay of the communication system by an automatic method. the computer simulation results confirm the activity of the proposed algorithm for increasing the throughput and decreasing the average transmission delay by an accepted ratios.
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