Eighth IEEE Symposium on Computers and Communications
Pilot Pollution Interference Reduction Using Multi-Carrier Interferometry
Kemer-Antalya, Turkey
June 30-July 03
ISBN: 0-7695-1961-X
Mobile stations, in CDMA systems, have the capability to communicate with multiple base stations whenever it is located in the fringe areas covered by overlapping base stations. However, it is not desirable for an overlap area to contain pilot signals from a large number of base stations. As this would create pilot pollution interference and overload the mobile station?s RAKE receiver. Therefore, the mobile station?s RAKE receiver attempts to separate paths from three or more dominant pilot signals in the time domain to utilize path diversity. In each diversity (path/branch/finger), a large interference component exists due to the finger?s own signal and others? signals. We demonstrated the power of using a novel multi-carrier chip shaping in CDMA transmitters to reduce the effect of pilot pollution interference. Simulation studies have been carried out to verify the appropriateness of the proposed approach and we have obtained very promising results.
Index Terms:
CDMA, pilot pollution interference, Carrier Interferometry
Citation:
Mostafa M. El-Said, Anup Kumar, Adel S. Elmaghraby, "Pilot Pollution Interference Reduction Using Multi-Carrier Interferometry," iscc, pp.919, Eighth IEEE Symposium on Computers and Communications, 2003