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Spectral efficiency of direct‐sequence code‐division multiple‐access in cellular mobile radio
Author(s) -
Varzakas P.,
Tombras G. S.
Publication year - 1997
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/(sici)1099-1131(199709/10)10:5<247::aid-dac342>3.0.co;2-p
Subject(s) - code division multiple access , spectral efficiency , computer science , interference (communication) , cdma spectral efficiency , power control , cellular network , time division multiple access , spread spectrum , code (set theory) , channel (broadcasting) , electronic engineering , sequence (biology) , telecommunications , power (physics) , computer network , physics , engineering , set (abstract data type) , biology , genetics , programming language , quantum mechanics
In this paper, the spectral efficiency achieved by a direct‐sequence code‐division multiple‐access (DS‐CDMA) system operating in a cellular mobile radio environment is discussed. In contrast to previous works, here, spectral efficiency is examined in terms of channel capacity per user, estimated in an average sense, and the system's inherent diversity potential is considered. The analysis covers only the forward link, assuming a static model of operation for the considered DS‐CDMA system. In addition, it is shown that the application of a power control scheme leads to spectral efficiency enhancement due to cochannel interference reduction. Hence, the derived expressions provide a means for quantitative evaluation of cellular DS‐CDMA spectral efficiency with respect to multiple‐access and cochannel interference. © 1997 John Wiley & Sons, Ltd.