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Titolo:
INFORMATION-THEORETIC CONSIDERATIONS FOR SYMMETRICAL, CELLULAR, MULTIPLE-ACCESS FADING CHANNELS .2.
Autore:
SHAMAI S; WYNER AD;
Indirizzi:
TECHNION ISRAEL INST TECHNOL,DEPT ELECT ENGN IL-32000 HAIFA ISRAEL AT&T BELL LABS,LUCENT TECHNOL MURRAY HILL NJ 07974
Titolo Testata:
IEEE transactions on information theory
fascicolo: 6, volume: 43, anno: 1997,
pagine: 1895 - 1911
SICI:
0018-9448(1997)43:6<1895:ICFSCM>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
MULTIACCESS CHANNELS; CAPACITY REGION; POWER-CONTROL; CDMA SYSTEM; PERFORMANCE; RADIO;
Keywords:
ACHIEVABLE THROUGHPUT; CDMA; CELLULAR IT MODELS; FADING; SHANNON THEORY; TDMA; SIDE-BAND;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
CompuMath Citation Index
Science Citation Index Expanded
Citazioni:
57
Recensione:
Indirizzi per estratti:
Citazione:
S. Shamai e A.D. Wyner, "INFORMATION-THEORETIC CONSIDERATIONS FOR SYMMETRICAL, CELLULAR, MULTIPLE-ACCESS FADING CHANNELS .2.", IEEE transactions on information theory, 43(6), 1997, pp. 1895-1911

Abstract

A simple idealized linear (and planar) uplink, cellular, multiple-access communication model, where only adjacent cell interference is present and all signals may experience fading is considered. Shannon theoretic arguments are invoked to gain insight into the implications on performance of the main system parameters and multiple-access techniques. The model treated in Part I [1] is extended here to account for cell-site receivers that may process also the received signal at an adjacent cell site, compromising thus between the advantage of incorporatingadditional information from other cell sites on one hand and the associated excess processing complexity on the other. Various settings which include fading, time-division multiple access (TDMA), wideband (WB), and (optimized) fractional inter-cell time sharing (ICTS) protocols are investigated and compared. In this case and for the WB approach and a large number of users per cell it is found, surprisingly, that fading may enhance performance in terms of Shannon theoretic achievable rates. The linear model is extended to account for general linear and planar configurations. The effect of a random number of users per cell is investigated and it is demonstrated that randomization is beneficial. Certain aspects of diversity as well as some features of TDMA and orthogonal code-division multiple access (CDMA) techniques in the presence of fading are studied in an isolated cell scenario.

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Documento generato il 06/07/20 alle ore 05:56:44