NDLI: Making the most out of spectral redundancy in GSM: cheap CCI suppression

Content Provider	IEEE Xplore Digital Library
Author	Gardner, W.A. Reed, C.W.
Copyright Year	2001
Description	Author affiliation: Stat. Signal Process. Inc., Napa, CA, USA (Gardner, W.A.)
Abstract	FRESH (frequency-shift) filtering prior to Viterbi demodulation in GSM basestations and/or handsets can theoretically completely suppress 1 cochannel interferer with one antenna, 3 interferers with a diversity antenna pair, and 2M-1 interferers with M antennas. It also can partially suppress larger numbers of interfering signals. Network-level simulations reported in this paper clearly demonstrate that FRESH filtering prior to demodulation in GSM basestations and/or handsets provides a cost-effective means of substantially improving system performance regardless of the antenna subsystem used. In all cases considered, single antenna, pair of diversity antennas, fully adaptive array of four antennas per 120 /spl deg/ sector, and switched-beam array of four 30 /spl deg/ antennas per 120 /spl deg/ sector, FRESH filtering substantially reduces BER and FER (thereby improving quality) and/or reduces required SNR (thereby increasing range) and/or enables reduced frequency reuse factor (thereby increasing capacity).
Starting Page	883
Ending Page	889
File Size	602634
Page Count	7
File Format	PDF
ISBN	078037147X
ISSN	10586393
DOI	10.1109/ACSSC.2001.987050
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-11-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	GSM Radiofrequency interference Adaptive arrays Filtering Antenna theory Frequency diversity Demodulation Telephone sets Antenna arrays Viterbi algorithm
Content Type	Text
Resource Type	Article
Subject	Signal Processing Computer Networks and Communications

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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