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In this paper, first, sleep-mode and wake-mode existing in the Medium Access Control (MAC) layer of IEEE 802.16 are introduced. Next cycles of sleep-mode are described. Finally optimum Tmin , which is obtained by improving the length of Tminpsilas window in sleep-mode of previous methods, is described. This method changes Tmin with the changes of network load to reach the best situation in power consumption...
Based on the observation that dynamic occurrences of zeros in the cache access stream and cache-resident memory values of ordinary programs exhibit a strong bias towards zero, this paper presents a novel CMOS four-transistor SRAM cell (4T SRAM cell) for very high density and low power cache applications. This cell retains its data with leakage current and positive feedback without refresh cycle. Novel...
Wireless sensor networks (WSNs) are wireless ad hoc networks of tiny sensor nodes increasingly deployed for multiple civilian and military applications, including patient monitoring, wildlife monitoring, battlefield surveillance, enemy tracking, etc. Like other computer networks, WSNs must be provided of security services such as key management, confidentiality, integrity and authentication. However,...
A routing algorithm defines a route which packet traverses to get to destination. In this research we study some kind of routing algorithms that are used in internal connections networks of multi-processor and multi-computers systems. Then we discuss about some routing algorithms which have been implemented network on chip architecture. First, we present a group of routing algorithms based on various...
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