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Wideband Code Division Multiple Access (W–CDMA)
Table of Contents:
Definition and Overview
1. Cell Site Loading
2. Three-Sector Cell Site Configurations
3. Six-Sector Cell Site Configurations
4. Capacity Limitations Due To Orthogonality and Antenna Performance
Self-Test
Glossary
PDF of this tutorial
Self-Test
1. The _____________ is essentially interference limited by the overall interference level in the coverage area of each site.
a. network
b. beamwidth
c. capacity
2. The signal-to-interference ratio typically limits the probability of having service in a dense cell site.
a. true
b. false
3. The typical shape for cell site footprints is a __________ shape.
a. square
b. circular
c. rectangular
d. hexagonal
4. To further increase the capacity at each cell site without increasing the number of WCDMA carriers, a common practice is to increase the number of sector faces at the desired cell sites.
a. true
b. false
5. The rotational orientation of the sites and the number of sectors per site require ______________ beamwidth antennas for optimal capacity performance.
a. the same
b. different
c. no
6. The capacity of the WCDMA network is not affected by the amount of self-induced interference by the mobiles using the same sector face.
a. true
b. false
7. _____________is the disruption of the orthogonality of the codes by the multipath in the wireless network.
a. Antenna performance
b. Echo
c. Environment-induced interference
8. Although the fingers in the rake receiver will provide some additional diversity in a high multipath environment, the multipath is detrimental to the orthogonality of the WCDMA channel.
a. true
b. false
9. The radiation from the antennas in the backward direction benefits the WCDMA channel.
a. true
b. false
10. In general, the capacity of the W–CDMA network can be made optimized by choosing antennas that have the proper beamwidth for the given environment and cell site configuration.
a. true
b. false
Glossary >>
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