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) common presents for quicker info premiums, always-on information carrier, and greater voice community potential. Breaking down complicated know-how into easy-to-understand innovations, this hands-on, system-level source deals RF (radio frequency) and instant method engineers specialist counsel in designing, optimizing, and working a CDMA2000 instant community.

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Extra resources for 3G CDMA2000 : wireless system engineering

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To alleviate the responsibilities of the paging channel, IS-2000 added two additional channels: F-CCCH and F-BCCH. The F-CCCH is used to transmit specific messages intended for specific mobiles, while the F-BCCH is used to transmit broadcast system messages intended for all mobiles. Note that although the F-CCCH is “common” in the sense that it is shared by many mobiles, its purpose is to carry mobile-specific messages. 4. , channel assignment message) that are previously carried by the paging channel, it is no surprise that the structure of the F-CCCH is similar to that of the paging channel.

The R-EACH is described in the next section. The R-CCCH is “common” in that it is shared among many mobiles, but the key difference here is that the use of this channel is scheduled among the different mobiles2. Note that the R-CCCH is only used when there is no R-DCCH or no R-FCH active on the reverse link. As soon as a reverse dedicated control channel and/or reverse fundamental channel become active, signaling messages are then sent on either one or both of these channels. In a given CDMA carrier, there is a one-to-one correspondence between an F-CCCH and an R-CCCH.

Note that Radio Configuration 1 and Radio Configuration 2 are backward compatible with IS-95 in that they are equivalent to Rate Set 1 and Rate Set 2 of IS-95. For each radio configuration, the table shows the maximum achievable data rate (instead of all possible data rates). 6 Kbps is shown. 3 Signaling Channels 15 configuration the coding rate R is normally the same regardless of the size of the frame (20 ms or 5 ms). , Spreading Rate 3), the coding rate is dependent on the size of the frame transmitted.

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