By Joseph Shapira
The ebook addresses the position of repeaters within the CDMA community, their interplay with the community and the wanted integrative layout and optimization of the repeater-embedded community. The procedure of the booklet is to enhance practical comprehension of the advanced radio community, and affinity to the criteria dominating the Radio source usage. easy versions are constructed, and field-measured case experiences supplement the research.
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Extra info for CDMA Radio with Repeaters (Information Technology: Transmission, Processing and Storage)
Is the load level in the BTS. The nominal level set for RSI is at -73 [dBmWatt^] for 850 MHz band and -76 [dBmWatt^] for the PCS band, representing a 50% loaded cell, 7 dB set Ei/It, 5 dB noise figure and 43 dBm BTS power. ^^K^ZC^ (2-2) CDMA Air Interface Overview 31 where C/ are ascending and correction terms defined for the access sequence. There are a maximum of 16 ascending probes in a probe sequence. The same equation holds while in the traffic state. The ST continues to measure STM and add up correction terms, to account for changes in the BTS power, load and interference.
2 Soft Handoff Process The ST continuously scans the pilot code map for pilots that are strong enough to be considered for SHO. The rake receiver consists of 3 correlators ("fingers") for despreading the desired traffic and its delayed multipath repUcas, and one pilot search correlator that performs the scan. The efficiency of this serial search requires a hierarchical structure in order to prioritize the search. This is built from the network planning and measurements and provided to the ST by the BTS.
1 Reverse Link Power Control The capacity of the CDMA cellular system is interference limited by transmissions of other users in the cell and others in adjacent cells. The transmission power of each ST is controlled to minimize this interference and maximize the capacity. The control parameter is the error rate in the link, measured per frame in the CDMA system (FER - Frame Error Rate) that has to be kept under a level commensurate with the service. The allowed FER for voice is 1%. The FER is mostly influenced by the received £//;, which depends on the level of transmitted power.