We investigated age-related changes in default, attention, and control network activity and their interactions in young and old adults. Brain activity during autobiographical and visuospatial planning was assessed using multivariate analysis and with intrinsic connectivity networks as regions of interest. In both groups, autobiographical planning engaged the default network while visuospatial p...

Both Digital Audio Broadcasting (DAB) and Digital Video Broadcasting (DVB) systems use orthogonal frequency division multiplexing (OFDM) to facilitate single frequency networks (SFNs). In an SFN all transmitters transmit the same information in the same frequency block simultaneously. This transmitter diversity structure makes SFNs very efficient in fading channels with an excellent spectrum sa...

Network providers aim to offer a high level of service quality in order to satify their customers’ requirements. One of the key factors to fulfil this requirement is a careful network design providing enough available transmission capacity. As data traffic tends to increase continuously, network operators regularly face the necessity to upgrade their network to match the growing demands. In thi...

A radio planning methodology for IS-95 based CDMA networks is presented. Inherent to the planning methodology i s a comprehensive performance characterization of both the forward and reverse links over a wide array of channel conditions. In addition, the link margin requirements under log-normal shadowing are addressed. Effects due to loading, Erlang variations and voice activity, soft and soft...

Building a network encompasses many tasks: from network planning to hardware installation and configuration, to ongoing maintenance. In this chapter we focus on the process of network planning. It is possible (though not always wise) to design a small network by eye, but automated techniques are needed for the design of large networks. The complexity of such networks means that any “ad hoc” des...