3G CDMA2000 Wireless System Engineering by Samuel C. Yang

By Samuel C. Yang

CDMA2000 is of severe curiosity to instant communications pros simply because this 3G (third iteration) regular presents for swifter info charges, always-on info provider, and more advantageous voice community skill. Breaking down advanced know-how into easy-to-understand innovations, this hands-on, system-level source bargains RF (radio frequency) and instant procedure engineers professional counsel in designing, optimizing, and working a CDMA2000 instant community.

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3. In reservation access mode. In reservation access mode, only a short 5 ms “header” frame and its preamble are transmitted on the R-EACH. 3 12 CRC bits 8 encoder tail bits Examples of 20-ms, 10-ms, 5-ms R-CCCH frames. In terms of frame formats, the frame formats supported by the R-EACH are identical to those supported by the R-CCCH with one important exception. In addition to supporting 20-ms, 10-ms, and 5-ms data frames, the R-EACH also supports a special 5-ms header frame which is used to transmit these short initial access requests4.

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.

Here we focus our discussions on the forward fundamental and supplemental channels. 1 Functions The IS-2000 F-FCH is similar to the IS-95 forward traffic channel in that the primary function of the F-FCH is to carry user data. The following lists the main purposes of the IS-95 forward traffic channel: • • • • Transmission of voice traffic; Transmission of low-rate data traffic; Transmission of signaling traffic via dim-and-burst and blank-and-burst schemes; Transmission of power control bits to power control the reverse link.

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