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Estimating Network Effects and Compatibility in Mobile Telecommunications

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Author Info
Michal Grajek (ESMT European School of Management and Technology)

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Abstract

I develop a structural demand model for mobile telephone service, which facilitates the identification of network effects and compatibility between networks. Network effects are measured by the dependence of consumer willingness to pay on the installed base of subscribers. Compatibility is measured by the relative extent of cross- and own-network effects. I then estimate the model using quarterly panel data from the Polish mobile telephone industry from 1996-2001 and find strong network effects and—despite full interconnection of the mobile telephone networks—low compatibility. I also show that ignoring network effects leads to an overestimation of elasticity of demand.

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Publisher Info
Paper provided by ESMT European School of Management and Technology in its series ESMT Research Working Papers with number ESMT-07-001.

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Length: 43 pages
Date of creation: 27 Sep 2007
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Handle: RePEc:esm:wpaper:esmt-07-001

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Related research
Keywords: Structural Econometric Model Network Effects Compatibility Mobile Telecommunications

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Find related papers by JEL classification:
C51 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Construction and Estimation
D12 - Microeconomics - - Household Behavior - - - Consumer Economics: Empirical Analysis
L96 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Telecommunications

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  2. Michal Grajek, 2002. "Identification of Network Externalities in Markets for Non-Durables," CIG Working Papers FS IV 02-32, Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG). [Downloadable!]
  3. Newey, Whitney K & West, Kenneth D, 1987. "A Simple, Positive Semi-definite, Heteroskedasticity and Autocorrelation Consistent Covariance Matrix," Econometrica, Econometric Society, vol. 55(3), pages 703-08, May. [Downloadable!] (restricted)
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  4. Jeffrey Rohlfs, 1974. "A Theory of Interdependent Demand for a Communications Service," Bell Journal of Economics, The RAND Corporation, vol. 5(1), pages 16-37, Spring. [Downloadable!] (restricted)
  5. Philip M. Parker & Lars-Hendrik Roller, 1997. "Collusive Conduct in Duopolies: Multimarket Contact and Cross-Ownership in the Mobile Telephone Industry," RAND Journal of Economics, The RAND Corporation, vol. 28(2), pages 304-322, Summer. [Downloadable!] (restricted)
  6. Blonski, Matthias, 2002. "Network externalities and two-part tariffs in telecommunication markets," Information Economics and Policy, Elsevier, vol. 14(1), pages 95-109, March. [Downloadable!] (restricted)
  7. Becker, Gary S, 1991. "A Note on Restaurant Pricing and Other Examples of Social Influences on Price," Journal of Political Economy, University of Chicago Press, vol. 99(5), pages 1109-16, October. [Downloadable!] (restricted)
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  8. Cabral, Luis M. B., 1990. "On the adoption of innovations with 'network' externalities," Mathematical Social Sciences, Elsevier, vol. 19(3), pages 299-308, June. [Downloadable!] (restricted)
  9. Gruber, Harald & Verboven, Frank, 2001. "The diffusion of mobile telecommunications services in the European Union," European Economic Review, Elsevier, vol. 45(3), pages 577-588, March. [Downloadable!] (restricted)
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  10. Okada, Yosuke & Hatta, Keiko, 1999. "The Interdependent Telecommunications Demand and Efficient Price Structure," Journal of the Japanese and International Economies, Elsevier, vol. 13(4), pages 311-335, December. [Downloadable!] (restricted)
  11. Katz, Michael L & Shapiro, Carl, 1994. "Systems Competition and Network Effects," Journal of Economic Perspectives, American Economic Association, vol. 8(2), pages 93-115, Spring. [Downloadable!] (restricted)
  12. Klemperer, Paul, 1992. "Competition When Consumers Have Switching Costs: An Overview," CEPR Discussion Papers 704, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
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  13. Assar Lindbeck & Sten Nyberg & Jšrgen W. Weibull, 1999. "Social Norms And Economic Incentives In The Welfare State," The Quarterly Journal of Economics, MIT Press, vol. 114(1), pages 1-35, February. [Downloadable!] (restricted)
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  14. Schoder, Detlef, 2000. "Forecasting the success of telecommunication services in the presence of network effects," Information Economics and Policy, Elsevier, vol. 12(2), pages 181-200, June. [Downloadable!] (restricted)
  15. Bousquet, Alain & Ivaldi, Marc, 1997. "Optimal pricing of telephone usage: An econometric implementation," Information Economics and Policy, Elsevier, vol. 9(3), pages 219-239, September. [Downloadable!] (restricted)
  16. Beggs, Alan W & Klemperer, Paul, 1992. "Multi-period Competition with Switching Costs," Econometrica, Econometric Society, vol. 60(3), pages 651-66, May. [Downloadable!] (restricted)
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Cited by:
(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. Michal Grajek & Tobias Kretschmer, 2006. "Usage and Diffusion of Cellular Telephony, 1998-2004," CIG Working Papers SP II 2006-20, Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG). [Downloadable!]
    Other versions:
  2. Huang, Ching-I, 2007. "Estimating Demand for Cellular Phone Service under Nonlinear Pricing," MPRA Paper 6459, University Library of Munich, Germany. [Downloadable!]
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