By Joseph Shapira
The booklet addresses the function of repeaters within the CDMA community, their interplay with the community and the wanted integrative layout and optimization of the repeater-embedded community. The strategy of the publication is to advance practical comprehension of the complicated radio community, and affinity to the criteria dominating the Radio source usage. uncomplicated types are constructed, and field-measured case experiences supplement the research.
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Additional info for CDMA Radio with Repeaters (Information Technology: Transmission, Processing and Storage)
Space, polarization and angle diversity techniques are reviewed. RF transmit diversity is analyzed, and time-delay (TDTD) and phase-sweep (PSTD) transmit diversity characteristics throughout the coverage are modeled and shown to be complementary. Add-on techniques for transmit diversity, applicable to base stations and to repeaters, are treated. Chapter Six is a key chapter on the interaction of the repeaters with the CDMA radio access network. Both forward link (FL) and reverse link (RL) interaction are modeled in a way that reflects their impact on the donor and adjacent cells.
The combination of these attributes forges each cell as a dynamic, "living" entity, operating as a group within the environment of other cells, and relieves the analysis from probing each user. The underlying rules stated above are simple and allow for simple monitoring, analysis, control and optimization. The approach adopted in this book is to employ these system rules, together with the basic propagation rules, in analyzing their interaction. 4 Theme of the Book Repeaters constitute an interactive part within the cellular CDMA network.
For a more detailed review of repeater economics see Chapter 9. A simple cost criterion is the number of boxes in the repeater system. Transmit power is another differentiator, and then special control and monitoring functions, to name a few, have major effects on cost. A classification of solutions by application in Table 1-1 helps in dimensioning their cost. Tahlel-l. 1 The Complexity of the Multiple Access Mobile Communications Channel Every mobile wireless communications system comprises a structured element, consisting of the hardware and software encapsulated in the transmit and receive ends of the link, and the processing and control thereof, and an unstructured element - the propagation medium.