Recommended by Dimitrios Tzovaras Explicit expressions are derived for the channel capacity of multiantenna systems with the Nakagami fading channel.

OBJECTIVES This study was performed to assess the community capacity building ability of health promotion workers of public health centers and to identify influential factors to the ability. METHODS The subjects were 43 public officers from 16 public health centers in Busan Metropolitan City. Questionnaire was developed based on 'Community Capacity Building Tool' of Public Health Agency of Ca...

A multiple access channel and a point-to-point channel sharing the same medium for communications are considered. We obtain an outer bound for the capacity region of this setup, and we show that this outer bound is achievable in some cases. These cases are mainly when interference is strong or very strong. A sum capacity upper bound is also obtained, which is nearly tight if the interference po...

This paper considers error probabilities of random codes for memoryless channels in the fixed-rate regime. Random coding is a fundamental scheme to achieve the channel capacity and many studies have been conducted for the asymptotics of the decoding error probability. Gallager derived the exact asymptotics (that is, a bound with asymptotically vanishing relative error) of the error probability ...

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Visual working memory is a system used to hold information actively in mind for a limited time. The number of items and the precision with which we can store information has limits that define its capacity. How much control do we have over the precision with which we store information when faced with these severe capacity limitations? Here, we tested the hypothesis that rank-ordered attentional...

The question of capacity building in education has predominantly been approached with regard to the methods and methodologies of educational research. Far less attention has been given to capacity building in relation to theory. In many ways the latter is as pressing an issue as the former, given that good research depends on a combination of high quality techniques and high quality theorising....

With the advent of more and more sophisticated applications for mobile users, high rate-demanding services and new habits of subscribers, wireless communications system designers are confronted to new challenges: providing ubiquitous availability, improving energy efficiency, enhancing system capacity and guaranteeing security. As some of these aspects cannot be simultaneously optimized in conv...

Ethernet is the most widely used network and many analytical models were developed to predict its capacity. Usually in these models assumptions like infinite population, no back-off algorithm and slotted channel are made. By comparing two models (one slotted and the other non-slotted) with reported measurements, we showed the optimistic estimate of the channel capacity of the slotted model is n...