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Attractive features of the UWB technology are low cost and low system complexity. In order to reduce the system complexity of the conventional circuit structure, a novel and simple circuit structure is designed in this paper, and a new fully integrated single-user digital receiver for TH-UWB communications is proposed. Based on this scheme, the theoretical analysis on the whole single-user digital...
This paper presents the idea of recaption cost to characterize WAP sources of images and improve the classic cache removal policy. Then it gets a new policy of image caches, LFU based on recaption cost; using the algorithm in the wap browser, It adopts the strategy of destroying cached images when exiting the browser, in this way, it not only guarantees obtaining newest images when starting browser...
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