We study a covert queueing channel between two users sharing a round robin scheduler. Such a covert channel can arise when users share a resource such as a computer processor or a router arbitrated by a round robin policy. We present an information-theoretic framework to model and derive the maximum reliable data transmission rate, i.e., the capacity of this channel for both noiseless and noisy...

This study provides a general diversity analysis for joint complex diversity coding (CDC) and channel coding-based spacetime-frequency codeing is provided. The mapping designs from channel coding to CDC are crucial for efficient exploitation of the diversity potential. This study provides and proves a sufficient condition of full diversity construction with joint three-dimensional CDC and chann...

The mechanical construction method for a subway contact channel has the advantages of short period and high safety, is more being applied in coastal soft-soil areas. In order to explore suitability this inland areas, full-scale model test platform used simulate shield-cutting process channel. convergence deformation segments strain reinforcement concrete are tested, so as analyze internal force...

using of nanofluids and ducts with corrugated walls are both supposed to enhance heat transfer, by increasing the heat transfer fluid conductivity and the heat transfer area respectively. use of a diverging duct with a jet at inlet section may further increase heat transfer by creating recirculation zones inside the duct. in this work two-dimensional incompressible laminar flow of a nanofluid e...

It is one of the biggest challenges of multi-user distributed cooperative antenna (COOPA) systems to provide base stations (BSs) with downlink channel information for transmit filtering (precoding). The analog pilot retransmission method is efficient in terms of resources but is vulnerable to noise enhancement effects. The precoder codebook based feedback schemes are not applicable since they a...

M Me es sh h N Ne et tw wo or rk k T To op po ol lo og gy y C Co on ns st tr ru uc ct ti io on n a an nd d C Ch ha an nn ne el l F Fr re eq qu ue en nc cy y A Al ll lo oc ca at ti io on n i in n t th he e T TO OW WN N P Pr ro oj je ec ct t T TI IK K-R Re ep po or rt t 2 25 55 5 Executive Summary The TOWN project addresses employing mesh routers with multiple IEEE 802.16-2004 interfaces to const...