Delay sensitivity analysis of CDMA downlink handoff algorithms
- 13 August 2004
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 3, 1185-1189
- https://doi.org/10.1109/glocom.2003.1258426
Abstract
We analyze the performance of different handoff algorithms for the forward link of a CDMA cellular system. Unlike the reverse link, soft handoff on the forward link requires additional resources such as CDMA codes and transmit power and also causes additional interference. If handoff requests can be processed instantaneously, transmission from the base station with the best link to the user would achieve a significant fraction of the macro-diversity gain without utilizing additional resources. However, in practical systems there is a non zero execution delay and soft-handoff provides the required robustness to delays although it comes at the expense of additional network resources. There is thus a tradeoff between the extent of soft handoff required and the handoff execution delay. We compare the performance of the hard and soft handoff schemes and study their sensitivity to the execution delay. Outage and the average transmit power required are used as performance metrics. We present an analytical framework to study this tradeoff.Keywords
This publication has 12 references indexed in Scilit:
- Sensitivity Analysis of Handoff Algorithms on CDMA Forward LinkIEEE Transactions on Vehicular Technology, 2005
- The capacity-coverage tradeoff in CDMA systems with soft handoffPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Analysis of fade margins for soft and hard handoffsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Locally optimal soft handoff algorithmPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Analysis of a CDMA soft-handoff algorithmIEEE Transactions on Vehicular Technology, 1998
- A locally optimal handoff algorithm for cellular communicationsIEEE Transactions on Vehicular Technology, 1997
- Performance analysis of soft handoff in CDMA cellular networksIEEE Journal on Selected Areas in Communications, 1996
- Soft handoff extends CDMA cell coverage and increases reverse link capacityIEEE Journal on Selected Areas in Communications, 1994
- A model for analyzing handoff algorithms (cellular radio)IEEE Transactions on Vehicular Technology, 1993
- Correlation model for shadow fading in mobile radio systemsElectronics Letters, 1991