NDLI: Comparison of orthogonal CDMA and slow frequency hopping (SFH)/TDMA for picocell communications

Content Provider	IEEE Xplore Digital Library
Author	Chi Kuen Leung Boukli-Hacene, M.
Copyright Year	1996
Description	Author affiliation: Dept. of Electr. Eng., Polytech. Univ., Brooklyn, NY, USA (Chi Kuen Leung)
Abstract	In this analysis, the effects of co-channel interference, unintentional interference, fading on an orthogonal (O)-CDMA and a slow frequency hopping (SFH)-TDMA system are investigated. Both OCDMA and SFH/TDMA are small-cell, low-mobility systems without low-rate speech coding and other heavy-duty baseband signal processing. Further, TDD rather than FDD is used. Both systems have the same number of channels, system bandwidth, cell layout, and voice activity detection. After all the analysis, we have found that OCDMA and SFH/TDMA are very much the same on the basis of performance. One advantage for OCDMA is the ability to achieve a higher order of diversity via the RAKE receiver; L can get up to 3. The advantage of SFH is that coding can be used effectively to improve the performance. This is not true of OCDMA, since we are assuming low-speed mobility, and the signal variations due to multipath will be relatively slow. However, frequency hopping forces the variations to be fast so that coding is effective.
Starting Page	355
Ending Page	359
File Size	536660
Page Count	5
File Format	PDF
ISBN	0780333004
DOI	10.1109/ICUPC.1996.557923
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-10-02
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multiaccess communication Frequency Time division multiple access Fading Interchannel interference Speech coding Baseband Signal processing Bandwidth Performance analysis
Content Type	Text
Resource Type	Article

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