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Journal of Engineering and Applied Sciences
Year: 2006 | Volume: 1 | Issue: 3 | Page No.: 273-277
A QOS Aware Network Design for Future Wireless CDMA Networks
Sasi Praba T. and S.K. Srivatsa
 
Abstract: The aim of this study is to design a CDMA network that will increase the capacity of the entire network and decrease the amount of interference between the cells. The capacity of a single cell in a CDMA network depends on the number of simultaneous users that can be handled within that cell (intra cell interference), as well as on the interference of users in adjacent cells(intercell interference). Thus, the number of simultaneous users that can be handled within one cell depends on the number of simultaneous users in all the cells in the network. This interference limitation makes the cell placement in CDMA networks particularly difficult. The problem of placing cells in a region with a given user profile would require the calculation of the intercell interference which depends on the cell geometry, the transmit power levels of users and the number of users in the adjacent cells. This problem is not present in networks that use fixed channel assignment algorithms, wherein co channel interference is eliminated by using different frequency sets in adjacent cells, thereby separating the problem of cell placement and cell capacity, In such networks, the design rule of thumb is to place cells so that each will have a constant demand. Thus smaller cells are used in areas of high demand while larger cells are used in areas of low demand. In CDMA networks differing usage results in differing intercell interference, so a more efficient topology design is needed for CDMA networks.
 
How to cite this article:
Sasi Praba T. and S.K. Srivatsa , 2006. A QOS Aware Network Design for Future Wireless CDMA Networks. Journal of Engineering and Applied Sciences, 1: 273-277.
URL: http://medwelljournals.com/abstract/?doi=jeasci.2006.273.277