By Ajay R. Mishra
During this publication, the writer addresses applied sciences which are getting used in rising mobile markets. those contain GSM/EGPRS and CDMA that are being deployed at a swift speed, whereas applied sciences comparable to UMTS (3G)/ HSPA (3.5G) that have began to discover a position in those excessive development markets, also are thought of. The e-book examines different applied sciences together with LTE (3.9G) that have already moved out of analysis labs into the economic international. 2G-CDMA is standard, whereas extra advancements, e.g. CDMA2000 also are discovering popularity within the advertisement enviornment. IMS/Convergence is more and more renowned worldwide; UMA, that's deployed regularly in North the USA; and DVB that's gaining around the world attractiveness, particularly in South Asia, are all reviewed.
each one bankruptcy discusses a special know-how and is based into 3 components. The know-how is tested at an outline point, first explaining what the expertise is after which contemplating the technical good points of the expertise. The bankruptcy concludes by way of taking a look at the planning/implementation features of the technology.
- Useful for all mobile pros as presents an summary of the at the moment deployed applied sciences in mass scale, and the coming near near applied sciences which are anticipated to make an influence sooner or later, akin to 4th iteration mobile Networks.
- One of the 1st books out there to surround all of the significant mobile applied sciences, in addition to contemplating the layout and implementation viewpoint.
instant know-how will play a key position in uplifting the economies of the rising international locations globally. Ashok Chandra, instant consultant to executive. of India
Chapter 1 mobile know-how in rising Markets (pages 1–14):
Chapter 2 GSM and EGPRS (pages 15–53):
Chapter three UMTS (pages 55–93):
Chapter four CDMA (pages 95–124):
Chapter five HSPA and LTE (pages 125–151):
Chapter 6 OFDM and All?IP (pages 153–171):
Chapter 7 Broadband instant entry: WLAN, Wi?Fi and WiMAX (pages 173–200):
Chapter eight Convergence and IP Multimedia Sub?System (pages 201–228):
Chapter nine Unlicensed cellular entry (pages 229–244):
Chapter 10 DVB?H (pages 245–263):
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Extra info for Cellular Technologies for Emerging Markets: 2G, 3G and Beyond
There is another process known as ‘model tuning’ during which the propagation models are customized for applying in that particular area (for which planning is being carried out). Inputs from two sources are used: measurement analysis from ‘tool and field measurements’. For the former, an accurate digital map is a primary requirement. The field measurements are then carried out through ‘drive testing’. 9 An example of a typical coverage plan. output of this exercise? It is correction factors. This exercise gives correction factors for each ‘clutter type’.
Apart from traffic planning, all these individual planning aspects also cover the interface and signalling planning as well. Once the number, location and capacity of the BTS, BSC and MSC elements are decided in preliminary calculations, a detailed planning phase starts wherein the site selection process, detailing capacity-coverage planning and parameter planning is carried out. This is followed by an installation and commission phase at which the site ‘goes live’. After this, parameter tuning is carried out in order to achieve the best coverage, capacity and quality from the network.
Frequency Planning and Spectrum Efficiency The frequency spectrum is always a big issue with the operators, regulators and of course radio planning engineers. The area to be covered is usually much larger as compared to the number of channels available. Hence, a common technique is used which is called as ‘frequency re-use’. 10). One important factor in the frequency re-use is the distance. This is based on considering that the cells are hexagons. However, as cells are not ‘practically’ hexagons, hence the frequency re-use factor is not common in the network.