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Effect of intercell pilot signals on cellular CDMA forward link
Author(s) -
Cheah Kok L.,
Li Kwok H.
Publication year - 1999
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(199905/06)12:3<167::aid-dac392>3.0.co;2-o
Subject(s) - computer science , interference (communication) , code division multiple access , channel (broadcasting) , transmission (telecommunications) , telecommunications , degradation (telecommunications) , computer network , electronic engineering , engineering
In cellular CDMA, the implementation of pilot channels on the forward link enables accurate coherent detection and synchronous transmission. In conjunction with concatenated Walsh sequences, this results in significant capacity gain. However, the undesirable co‐channel interference introduced by these intercell pilot signals is seldom addressed. Our analysis indicates that ignoring its effect can overestimate the capacity by as much as 15%. A partial implementation of multiuser detection is proposed to recover most of the degradation. Copyright © 1999 John Wiley & Sons, Ltd.