NDLI: Interference issues in multi-code CDMA networks

Content Provider	IEEE Xplore Digital Library
Author	Zhao Liu Karol, M.J. Zarki, M.E. Eng, K.Y.
Copyright Year	1996
Description	Author affiliation: Lucent Technol., AT&T Bell Labs., Holmdel, NJ, USA (Zhao Liu)
Abstract	Multi-code direct-sequence code division multiple access (MC-CDMA) has been proposed as a flexible multiple access scheme for wireless packet networks that support a large variety of mobiles with different and even time-varying rates. However, the interference model typically used with conventional DS-CDMA cellular systems - a large number of low-power mobiles uniformly distributed in cells - may not hold. In MC-CDMA cellular systems, it is possible for a high-rate mobile, perhaps near the boundary of a cell, to have all the codes for high-rate transmission - therefore transmitting at high power and causing significant interference to the neighboring cell. In this study, we analyze the effects of MC-CDMA intercell interference on the reverse link (i.e., mobile to cell site) and investigate a maximum capacity power allocation (MCPA) criterion that exploits the sub-code concatenation property of MC-CDMA transmission. When the transmission rate is high, power control with MCPA criterion can significantly reduce reverse-link MC-CDMA intercell interference. However, with only four codes per mobile (e.g., as in IS-95), the reduction in intercell interference is less than 1 dB.
Starting Page	98
Ending Page	102
File Size	550984
Page Count	5
File Format	PDF
ISBN	0780336925
DOI	10.1109/PIMRC.1996.567524
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-10-18
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interference Intelligent networks Multiaccess communication Multicarrier code division multiple access Streaming media Personal communication networks Power system modeling Bit error rate Power control Wireless communication
Content Type	Text
Resource Type	Article

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