Impact of Shadowing Correlation on Reverse Link Capacity of DS-CDMA Cellular System

Independent shadowing losses are often assumed for evaluating the link capacity of direct sequence code division multiple access (DS-CDMA) cellular system. However, shadowing losses may be partially correlated since the obstacles surrounding a mobile station block similarly the desired signal and the interfering signals. In this letter, we discuss how the shadowing correlation impacts the reverse link capacity of a power-controlled DS-CDMA cellular system, by numerical analysis.

[1]  J.E. Mazo,et al.  Digital communications , 1985, Proceedings of the IEEE.

[2]  F. Adachi,et al.  Impact of Shadowing Correlation on Spectrum E ffi ciency of a Power Controlled Cellular System , 2003 .

[3]  Marina Ruggieri,et al.  A general analysis of signal strength handover algorithms with cochannel interference , 2000, IEEE Trans. Commun..

[4]  L. Fenton The Sum of Log-Normal Probability Distributions in Scatter Transmission Systems , 1960 .

[5]  Eisuke Kudoh,et al.  Impact of Shadowing Correlation on Spectrum Efficiency of a Power Controlled Cellular System(Wireless Communication Technology) , 2004 .

[6]  Akihito Katoh,et al.  Joint Effect of Transmit Power Control and Antenna Diversity on Spectrum Efficiency of a Cellular System(Wireless Communications Issue) , 2002 .

[7]  W. C. Jakes,et al.  Microwave Mobile Communications , 1974 .

[8]  E. Zehavi,et al.  Soft handoff extends CDMA cell coverage and increases reverse link capacity , 1994, IEEE J. Sel. Areas Commun..

[9]  Fumiyuki Adachi,et al.  B-5-149 Reverse Link Performance of Site Diversity based Transmit Power Control with Antenna Diversity and Rake Combining in DS-CDMA Mobile Radio , 2004 .

[10]  Fortunato Santucci,et al.  A general correlation model for shadow fading in mobile radio systems , 2002, IEEE Communications Letters.

[11]  Marina Ruggieri,et al.  A multicell model of handover initiation in mobile cellular networks , 1999 .

[12]  Ainslie,et al.  CORRELATION MODEL FOR SHADOW FADING IN MOBILE RADIO SYSTEMS , 2004 .

[13]  Andrew J. Viterbi,et al.  Soft Handoff Extends CDMA Cell Coverage and Increase Reverse Link Capacity , 1994, Mobile Communications.

[14]  Fumiyuki Adachi,et al.  Capacity Estimation for Overlaid Multiband CDMA Systems with SIR-Based Power Control , 2000 .

[15]  M. Gudmundson Correlation Model for Shadow Fading in Mobile Radio Systems , 1991 .