By Jiangzhou Wang, Tung-Sang Ng
Provide you with in-depth wisdom of many of the technical regimes for enforcing 3rd new release (3G) instant cellular communications platforms, and covers the overdue improved recommendations more likely to develop into destiny criteria in 3.5G or 3GPP2. imperative reference for practising execs and scholars.
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Additional info for Advances in 3G Enhanced Technologies for Wireless Communications
Example text
Therefore, by detecting a signature s in a preamble part, BTS can simplify code synchronization processing in a message part. That is, for the channelization code of a control part, one orthogonal variable spreading factor code with a 256chip length for every 16 code, C ch ,256,m is selected in accordance with the 16 signatures s based on the relation of m = 16(s − 1) + 15. However, orthogonal variable spreading factor code C ch ,SF,m is obtained according to the spreading factor from 32 to 256 and s using the corresponding relation m = SF × (s − 1)/16 for the channelization code of a data part.
Thus, the site selection diversity transmit (SSDT) power control [33], in which only the primary BS transmits control bits to decrease the interference, was proposed. 3 Transmit Diversity Transmit diversity employing several antennas at a BS can improve the forward link transmission performance without increasing the complexity of the MS [34, 35]. Therefore, several transmit diversity schemes were adopted in the 3GPP standard [4, 16]. The CPCHs with the same spreading code, but different data modulation patterns, are transmitted from two antennas in the same carrier phase.
23 as a function of the total BS average transmit power. 21. Fast TPC was used for the reverse and forward links. The number of maximum RAKE fingers for the BS and MS was 4. 8. In the course of making our measurements, we observed that the instantaneous transmit power is controlled around the standard transmit power without dispersing to the maximum output during the measuring process. 3 dB compared to a one-cell site connection. 23 Average BER in the forward link intercell site diversity for field experiments.
