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Titolo: System capacity of FTDMA cellular systems
Autore: Caire, G; Knopp, R; Humblet, P;
 Indirizzi:
 Politecn Turin, I10129 Turin, Italy Politecn Turin Turin Italy I10129Politecn Turin, I10129 Turin, Italy Inst Eurecom, Mobile Commun Grp, F06904 Sophia Antipolis, France Inst Eurecom Sophia Antipolis France F06904 04 Sophia Antipolis, France
 Titolo Testata:
 IEEE TRANSACTIONS ON COMMUNICATIONS
fascicolo: 12,
volume: 46,
anno: 1998,
pagine: 1649  1661
 SICI:
 00906778(199812)46:12<1649:SCOFCS>2.0.ZU;2I
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 INFORMATIONTHEORETIC CONSIDERATIONS; MULTIPLEACCESS CHANNEL; FADING CHANNELS; ERROR PROBABILITIES; CDMA SYSTEM; RADIO; INTERFERENCE;
 Keywords:
 blockinterference and blockfading channels; cellular systems; information outage probability;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Engineering, Computing & Technology
 discip_EC
 Citazioni:
 50
 Recensione:
 Indirizzi per estratti:
 Indirizzo: Caire, G Inst Eurecom, Mobile Commun Grp, F06904 Sophia Antipolis, FranceInst Eurecom Sophia Antipolis France F06904 Antipolis, France



 Citazione:
 G. Caire et al., "System capacity of FTDMA cellular systems", IEEE COMMUN, 46(12), 1998, pp. 16491661
Abstract
We study the system capacity of cellular systems with timedivision multiple access, slow timefrequency hopping (FTDMA), and conventional singleuser processing at the receivers. System capacity is formally defined as the maximum of the product of the number of users per cell times the user spectral efficiency for a given maximum outage probability. We adopt an informationtheoretic definition of outage as the event that the mutual informationof the blockinterference channel resulting from a finite number of signalbursts spanned by the transmission of a user code word falls below the actual code rate, because of fading, shadowing, and interference. Starting from this definition, we develop a general framework which naturally takes into account many different aspects of FTDMA cellular systems like channel reuse, channel utilization, waveform design, timefrequency hopping, voice activity exploitation, handoff, and power control strategies. Most importantly, our analysis does not rely on the choice of a particular coding scheme and can be applied to a very large class of systems in order to find guidelines for capacitymaximizing system design. A numerical example based on a typical urban mobile environment shows that there is a considerable capacitygap between actual FTDMA systems and the limits predicted by our analysis, However, this gap can be filled by carefully designed "practical" systems, which make use of conventional singleuser processing and simple coded modulation schemes.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 08:14:57