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This paper investigates an energy-efficient transmission scheme in cognitive radio networks, where primary users (PUs) may reoccupy the spectrum when secondary users (SUs) is transmitting data. We aim to maximize the energy efficiency by jointly optimizing the transmission power, the fusion rule threshold and the sensing/transmission durations. Firstly, it is derived that for a given fusion rule threshold,...
High throughput sequencing technology is widely applied to discover and profile microRNAs (miRNAs) to gain insights into the biogenesis and function of miRNAs. In the study, we developed an approach for comparing relative expression levels of different miRNAs based on suitable endogenous miRNA control and their locus in the genome, miRNA group (such as miRNA cluster and miRNA family), and phylogenetic...
In this paper, the authors examine a cognitive MISO system with both cognitive link and primary link communicate using multiple transmission antennas. High layer information is used to predict the idle slot existing possibility and investigate the possibility of detection errors in real circumstances. How much influence of idle slot probability and detection error will bring to stability of the cognitive...
MicroRNAs (miRNAs) are single-stranded noncoding small RNAs, frequently expressed as clusters. The co-expressed miRNA clusters are pivotal in coordinately regulating multiple processes, including embryonic development, cell cycles and cell differentiation. In the study, relative expression analysis of miRNA cluster was performed based on isomiRs from high throughput DNA sequencing data using SOLiD...
This paper aimed to analyze attributes of urban logistics nodes and proposed methods of mathematical description of these attributes. In order to research attributes of urban logistics nodes and edges, the concepts of the logistics nodes of generation, the logistics nodes of attraction and the logistics nodes were proposed, the urban logistics nodes topology map in a general condition was established,...
SMS4 is a 128-bit block cipher used in the WAPI standard for protecting data packets in WLAN. In this paper, various S-box circuit architectures were evaluated firstly and the twisted BDD with m=4 was proved as the fastest one. A fast SMS4 cipher VLSI implementation was completed based on the twisted BDD S-box architecture, and achieved over 200 MHz and 100 MHz maximal frequency on SMIC 0.18 mum and...
This paper presents a high speed Radix-8 Log-MAP turbo decoder recursion architecture: algorithmic approximation and architectural optimization are incorporated in the proposed designs to reduce the critical path. The synthesis results show that the proposed design has a high throughput of 693 Mbps in 0.18 um CMOS technology, which is nearly 3 times higher than using conventional Radix-2 architecture...
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