Performance Evaluation of Dect in Different Radio Environments
DECT is a cordless telephone standard whose applications are broadening with the
advent of PCS services, wireless local loop (WLL), and the increasing demand for
high data-rate wireless local area networks (WLANs).
This thesis investigates the performance of DECT in different channel conditions.
DECT is simulated using the Signal Processing WorkSystem (SPW) software in
different channels including the additive white Gaussian noise (AWGN) channel,
the flat faded Rayleigh channel, the frequency selective faded Rayleigh channel,
and the Ricean channel. The effect of cochannel and adjacent channel
interference is also investigated.
In order to quantify the RF channel dispersive properties, and other parameters
that determine performance in a radio channel, channel impulse response
measurements at 1.9 GHz are made. Parameters that help describe the radio
channel are identified and calculated from the recorded power delay profile
Finally, a mean-opinion-score (MOS) rating was performed for National
Semiconductor Corporation's implementation of DECT in the indoor, indoor-to-
outdoor, and outdoor environments. A comparison is made between the MOS and
propagation measurements. It is found that the performance of DECT is very
closely related to the RMS delay spread and the path loss in the RF channel.
Advisor:Dr. J. H. Reed; Dr. B. D. Woerner; Dr. T. S. Rappport
School:Virginia Polytechnic Institute and State University
School Location:USA - Virginia
Source Type:Master's Thesis
Keywords:electrical and computer engineering
Date of Publication:08/05/1996