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Mobile social network (MSN) is a type of delay tolerant network explicitly considering social characteristics of the terminal nodes. The existing Ad Hoc routing protocols assume that there is at least one complete communication path between the source node and the target node. So they cannot be applied to MSN directly. The key to solve the problem of content distribution in mobile social network is...
In an era of mobile internet and big data, how to make the data access more efficient is worth researching because the mobile computing environments have some limitations such as the narrow bandwidth, the frequent disconnections of network and so on. To improve the response time of query, a good cache system is of vital importance. Besides, a good cache consistency method is essential to ensure the...
How to integrate labels from multiple labelers in order to obtain an accurate estimate of the ground truth is a major topic of crowdsourcing. One challenging issue is that, the labelers' abilities may vary significantly and the tasks distinguish each other in difficulties. Moreover, for a crowdsourcing system, task distributors have no idea in advance how many labels will be enough for each task....
A novel ASIC design of a 1024-point pipelined FFT Processor is introduced in this paper. This is a new FFT architecture based on the radix-2 algorithm and cordic algorithm. The solution adopted in the design is used to achieve a high-frequency FFT processor of which the frequency could reach as high as 330MHz. It also shows an advantage in saving up to fifty percent hardware resources over traditional...
CORDIC plural-multiplier is the key module to affecting the speed and accuracy of FFT processor. Considering these demands, the problem of CORDIC algorithm is discussed in detail and the according optimization methods are given in this paper. Then, the hardware pipelining structure of the CORDIC multiplier is put forward. Comparison results about RTL simulation results with MATLAB calculation indicate...
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