This section contains instructional material from Space 2000 live Seminar S2K180. Its
focus is IS-95 implementation and operational issues. Select a module below to begin.
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Module 01 - Questions 1 - 16: This module contains discussions on Wireless Cellular Networks background and an introduction to Pseudo-random Noise Sequences, or PN Sequences. |
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Module 02 - Questions 17 - 25: This module discusses how PN codes are used in IS-95 Systems. It contains some key chracteristics of PN Codes and shows how the Long PN codes and the short PN codes are used in IS-95 Systems. |
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Module 03 - Questions 26 - 38:
This module introduces the concept of Power Control and Power Control strategies and its effect on the Near-Far problem in the forward and reverse links. |
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Coming Soon:
This module describes Open Loop and Closed Loop Power Control and the effect it has on communications between the Mobiles and the Base Station. |
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Coming Soon:
This module discusses the functions of the forward
link Pilot and Synchronization channels. |
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Coming Soon:
This module discusses the functions of the forward link Paging and Traffic channels. |
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Coming Soon:
This module explains Logical Channels and Physical
Channels and discusses how the logical channels in
the Reverse Link are organized into the Access Channel
and the Reverse Traffic Channels, characterized by a
subset of the Long PN offsets.
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Coming Soon:
This module describes the Reverse Traffic channel
characteristics and discusses the functions of the
Vocoder, the Encoder, the symbol-Repetition device, the
Walsh Modulator and the Data Burst Randomizer
(DBR) in the block diagram.
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