every digital transmission system requires frame alignment. it is necessary to identify the varius signal componets and to bring receiver into phase with respect to the transmission format so that the digits can be properly assembled for demultiplexing. fast and reliable frame alignmant is important, and therefore has been a subject for study. this paper a comprehensive analysis of frame alignm...

In the paper, we propose a dynamic transmission scheduling protocol for multi-hop wireless networks by combining a fixed scheduling scheme with a simple p-persistent approach. In a fixed scheduling scheme, a predetermined schedule is assigned to each wireless node before transmitting data, and this schedule will be used permanently. However, in the proposed protocol, an adaptive probability-bas...

Many synapses have a high percentage of synaptic transmission failures. I consider the hypothesis that synaptic failures can increase the efficiency of information transmission across the synapse. I use the information transmitted per vesicle release about the presynaptic spike train as a measure of synaptic transmission efficiency and show that this measure can increase with the synaptic failu...

In a wireless network, blocking probability of connection-oriented traffic depends on the transmission radius of the nodes and the channel assignment scheme. In this work we study these two aspects for simple wireless networks. Specifically, we present blocking probability analysis for a wireless line network with random channel allocation to the incoming calls. Based on the expressions derived...

in this paper occurrences of precipitation in iran was analyzed according to random processes by the applying of markov chain model. in order to do that occurrence and non-occurrence of rainfall of asfezari data base for the period of 1961/3/21 to 2004/12/31 was used. this data are for 7187 pixel and 15991 days. by using markov chain model first order two state dry and wet frequency matrix was ...