4. In the De Vany et al. proposal for property rights in spectrum, they note one

Question

4. In the De Vany et al. proposal for property rights in spectrum, they note one area of potential conflict which is unique to Spectrum as a resource: intermodulation interference. The authors describe two ways in which such interference could arise. How do they assign the burden of dealing with each of these two forms and why?

A. De Vany, R.D. Eckert, C.J. Meyers, D.J. O'Hara, and R.C. Scott, "A Property System for Market Allocation of the Electromagnetic Spectrum: A Legal-Economic-Engineering Study," 21 Stan. L. Rev. 1499 (1969). pp. 1505-1518

Explanation / Answer

Peha and panichpapiboon took the steps to avoid interference effects.According to their proposal primary user is a GSM based cellular operator who wants to share spectrum of the downlink channels.The secondary user is prescribed to be stationary user such as fixed broadband wireless networks or point to points wireless networks.
The model propose two constraints : secondary user must not interfere with the primary user and the vice versa.Both parties should
coordinate their location and adjust their frequency asignments to avoid the interference.

Differnt techniques like FDMA(frequency division multiplexing),CDMA(code division multiplexing) and TDMA(time division multiplexing) can be used in order to avoid interference.

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