7 What do we mean by spreading signalin CDMA systems 16 Name

7. What do we mean by “spreading signal”in CDMA systems?

16. Name available channels in CDMA for both forward and reverse links.

Solution

7)

In CDMA systems the entire users spread in the same bandwidth at the same time. Communication system follow these concept are spread spectrum system. In this transmission procedure, the frequency range of a data signal is spread use a code uncorrelated with to signal.

16)

Forward link:

To make the signal, data since the entity channels is multiply with the Walsh codes to present the being forward link channel. The output since this procedure is further multiply with the small PN code. This provide a means of identify the sector OR cell from which the signal is come for the handset or mobile

Reverse link:

This channel is use by the mobile phone to communicate among the base location while no traffic channels have been put up. This channel is hence use for gaining access to the association, call initiation requests and too for transfer responses to page commands that may be sending by the network.