In personal communication systems based on Code Division Multiple Access (CDMA), voice is transported as compressed low bit rate information between network elements. Due to cost eeciency, future implementations of CDMA networks likely will utilize the Asynchronous Transfer Mode (ATM) technology to connect components of the land network infrastructure. This paper discusses the capability of usi...

The base station is the software application responsible to provide automatic processing of soccer game refereeing events and to allow high level monitoring and control of the robots internal states. This paper presents the base station developed for CAMBADA, the robotic soccer team of the University of Aveiro. It describes the main requirements and specifications of the base station and presen...

The optimal base station placement and effective radio resource management are of paramount importance tasks in cellular wireless networks. This paper deals with automatic planning of base station sites on a studied scenario, maintaining coverage requirement and enabling the transmission of traffic demands distributed over the area. A city scenario with different demands is examined and the adv...

The soft handoff is a process on transferring the on going call from one radio resource to another radio resource without any interruption. Rather, mobile unit looks next base station for possible new connection without breaking the old connection. This transfer of call takes place, when the mobile unit moves far away from old base station and approach toward new base station. At the far away d...

Base stations represent the main contributor to the energy consumption of a mobile cellular network. Since traffic load in mobile networks significantly varies during a working or weekend day, it is important to quantify the influence of these variations on the base station power consumption. Therefore, this paper investigates changes in the instantaneous power consumption of GSM (Global System...

This contribution proposes that the scope of the MMR Task Group include 1) multiple relays rather than only a two-hop single relay path to the base station, 2) the option to study subscriber station relays in the path to the base station, and 3) the option to study relay for wireless backhaul. This contribution also proposes definitions for performance metrics to be used in comparing mobile mul...

In this paper, we describe a Swarm of Robotic Ground Agents, which communicate with each other and collectively solve a myriad of tasks. The system deploys a Base Station, which communicates with all other Agents on the field. The Base Station also communicates with an Operations Center over the Internet. The Operations Center can arbitrate missions and monitor progress through a robust Cloud e...

In this paper we consider the problem of monitoring detecting separation of agents from a base station in robotic and sensor networks. Such separation can be caused by mobility and/or failure of the agents. While separation/cut detection may be performed by passing messages between a node and the base in static networks, such a solution is impractical for networks with high mobility, since rout...

Wireless sensor networks consist of energy constrained sensor nodes. The main challenge of the researchers is to utilize the energy of the wireless sensor network in an efficient manner. By minimizing the energy usage, the network lifetime can be improved. Energy efficiency can be obtained by using various techniques. Optimal base station placement is one of the techniques used to minimize the ...

Performance of a wideband multipath-fading terrestrial digital coded communication system is treated. The analysis has applications to a cellular system employing direct sequence spread spectrum CDMA with M-ary orthogonal modulation on the many-to-one reverse (user-to-base station) link. For these links, pqwer control of each multiple access user by the cell base station is a critically importa...