Spectral Efficiency of Hybrid DS/SFH CDMA System Using Analytical and Measured Macro Channel Models

Spectral Efficiency of Hybrid DS/SFH CDMA System Using Analytical and Measured Macro Channel Models

Grujev, S.

Prasad, R. (mentor)
Rooimans, R.G.A. (mentor)
Fatah, O. (mentor)

Electrical Engineering, Mathematics and Computer Science

Telecommunicatie- en Verkeersbegeleidingssystemen

1996-08-09

This report describes a performance analysis of a multiple access scheme for a third generation wireless macrocellular system. The performance in terms of bit error probability, capacity and spectral efficiency of a Hybrid DS/SFH CDMA system is evaluated using analytical and measured CODIT Cost 207 channel models.
A performance analysis of the analytical channel model has been done in the situation with and without power control, using QPSK modulation technique. A theoretical analysis of the effect of imperfect power control on the link capacity and efficiency is also presented. In addition, Selection Diversity is introduced to improve the system performance. The mobile-to-base link is modeled as a Rayleigh fading channel.
For the measured power delay profile channel model, we generated the phases randomly. The effect of Selection Diversity and Maximal Ratio Combining is investigated but not the effect of the order of diversity, since only one fixed delay profile is considered. Finally, a comparison has been made between the analytical and measured macro cellular channel models in a single cell environment, for two different bit rates using selection diversity for improving the performance.

Code Division Multiple Access
Direct Sequence
Frequency Hopping
Near-far effect
Power control
Cellular mobile system
Capacity
Spectral efficiency

http://resolver.tudelft.nl/uuid:1674a123-f5f6-416b-8fec-622043424fbd

Student theses

master thesis

(c) 1996 S. Grujev