NDLI: Evaluatfon of soft handover algorithms for UMTS

Content Provider	IEEE Xplore Digital Library
Author	Xinjie Yang Ghaheri-Niri, S. Tafazolli, R.
Copyright Year	2000
Description	Author affiliation: CCSR, Surrey Univ., Guildford, UK (Xinjie Yang)
Abstract	Soft handover (HO) is becoming quite important because of its suitability for CDMA based systems. Soft handover promises better performance than hard handover. The two most well-known benefits are fade margin improvement and higher uplink capacity, while the disadvantages include lower downlink capacity and more complex implementation. Proper design of handover is one of the main challenges in mobile communications, since it has a great impact on the system performance and capacity. Whereas in hard handover a definite decision is made on whether to handover or not, in soft handover a conditional decision is made based on the variety of parameters involving several base stations. This makes the soft handover design and parameter optimisation even more complex. Several initiation algorithms have been used and proposed in IS-95 and CDMA2000 respectively and their performances have been evaluated in literature. However, their performance have not been compared under similar conditions in terms of propagation, environment and mobility behaviour. In our study, four different soft handover algorithms have been considered, their performance have been evaluated in the same operating environments and conditions and the corresponding results are reported.
Starting Page	772
Ending Page	776
File Size	452548
Page Count	5
File Format	PDF
ISBN	0780364635
DOI	10.1109/PIMRC.2000.881527
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-09-18
Publisher Place	United Kingdom
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	3G mobile communication Shadow mapping Base stations Performance evaluation Mobile communication Semiconductor device measurement Delay Multiaccess communication Downlink System performance
Content Type	Text
Resource Type	Article

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