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An analytical model is developed to evaluate the performance of a cellular slotted DS CDMA system in terms of user capacity, throughput, and delay for the reverse link, i.e., from mobile to base station, considering interference from both home cell and adjacent cells. The user capacity is studied for voice communications and the throughput and delay are(More)
The scope of this paper is to introduce the research project MAGNET supported within the 6th framework of the European Commission. The project acronym MAGNET stands for " My personal Adaptive Global NET ". As the name implies, the project has a very strong emphasis on user-centricity, personalisation, adaptation, interoperability, personal networking and(More)
he second generation (2G) of wireless mobile communication systems was a huge success story because of its revolutionary technology and the services that it brought to its users. Besides high-quality speech service , global mobility was a strong and convincing reason for users to buy 2G terminals. The third generation (3G) has been launched in several parts(More)
—In this paper we investigate the problem of spectrally efficient operation of a cognitive radio (CR), also called Secondary System (SS), under an interference from the primary system (PS). A cognitive receiver (CRX) observes a multiple (MA) access channel of two users, the secondary and the primary transmitter, respectively. We advocate that the SS should(More)
The wireless connectivity, essential for pervasive computing, has ephemeral character and can be used for creating ad hoc networks, sensor networks, connection with RFID tags etc. The communication tasks in such wireless networks often involve an inquiry over a shared channel, which can be invoked for: discovery of neighboring devices in ad hoc networks,(More)