By Samuel C. Yang

ISBN-10: 1580537588

ISBN-13: 9781580537582

CDMA2000 is of serious curiosity to instant communications pros simply because this 3G (third iteration) general presents for speedier facts charges, always-on info carrier, and better voice community means. Breaking down complicated expertise into easy-to-understand suggestions, this hands-on, system-level source bargains RF (radio frequency) and instant procedure engineers professional suggestions in designing, optimizing, and working a CDMA2000 instant community.

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For example, a mobile does not have to monitor the F-CCCH all the time for page messages intended for it. Rather, by monitoring its paging indicators on the quick paging channel, the mobile knows whether or not it should start receiving the F-CCCH in the next F-CCCH slot [2]. , system parameters message and access parameters message) to those mobiles in a base station’s coverage area. Although the F-BCCH performs a function that is previously carried out by the IS-95 paging channel, the structure of the F-BCCH is somewhat different.

For a F-CCCH, a CDMA carrier can have a maximum of 32 R-CCCHs and a maximum of 32 R-EACHs. Plus if an F-CACH is also active, the same carrier can have another (maximum) set of 32 R-CCCHs. For each carrier, this gives a maximum total of 96 reverse common control channels and enhanced access channels. These 96 channels can all be power controlled using the 96 power control subchannels provided by the 4 power control groups per 20-ms frame on the F-CPCCH [2]. Note that each common power control subchannel is used to control the power of a single mobile.

The physical layer carries out coding functions to enable error correction and detection at the bit and frame levels. , modulation) and vice versa to enable their transmission over the air. In addition to coding and modulation, the physical layer also carries out the channelization function by which different users of the system can be distinguished from one another. In a shared direct sequence spread spectrum system (such as IS-2000 and IS-95), channelization is done via the use of orthogonal and nearorthogonal codes.

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3G CDMA2000 : wireless system engineering by Samuel C. Yang


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