By Jonathan P. Castro
All IP in 3G CDMA Networks covers all of the key points of UMTS and its implementation from either the engineering fashion designer and the operator and repair prone' standpoint. It addresses the basic initiatives occupied with the UMTS community deployment in new areas and inside of latest 2G/2.5G networks.Key features:Presents recommendations for the mixing and coexistence of 2G and 3G platforms and highlights the seamless interoperability capabilities among GSM and UMTS.As a part of the evolution in the direction of All IP mobile networks, it outlines the IP Multimedia Subsystem - IMS and the packet optimized Radio entry community, together with excessive velocity obtain Packet Access.Provides a whole photograph of broadband instant via UMTS, while describing purposes enabler systems and the factors for 3G providers that increase the consumer experience.By supplying one built-in resource in UMTS and its evolution, All IP in 3G CDMA Networks represents a useful source for layout engineers, operators and companies services. Likewise, Technical and advertising Executives and bosses in instant communications or similar components, and company or revenues channels representatives, will take advantage of this concise quantity in 3G networks and prone enablers. educational programmes in Telecommunications and data expertise segments at senior or postgraduate point, also will locate useful contributions during this publication.
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Extra info for All IP in 3G CDMA Networks: The UMTS Infrastructure and Service Platforms for Future Mobile Systems
J. To provide within the ofﬁce environment the capability to enable a pedestrian user to access all services normally provided by PBXs and LANs. k. To provide a substitute for ﬁxed networks in areas of diverse population densities, under conditions approved by the appropriate national or regional regulatory authority. l. To provide support for interfaces which allow the use of terminals normally connected to ﬁxed networks. In addition, UMTS aims: – to enable users to access a wide range of telecommunication services, including many that are today undeﬁned as well as multimedia and high data rates, UMTS NETWORK REQUIREMENTS 17 – to facilitate the provision of small, easy to use, low cost terminals with long talk time and long standby operation, – to provide an efﬁcient means of using network resources (particularly radio spectrum).
Packing more bits within an allocated frequency implies improving spectral efﬁciency, which in turn allows more users to be served at larger rates. This provides a vital means for cost reduction. e. high rate services, has also become an important concern to augment and speed up ‘Return of Investments’ (ROI). Before we list the different technologies maturing to provide a great opportunity to achieve substantial increases in spectral efﬁciency, coverage and overall system cost reduction, we shall bring the criteria to apply these into commercial solutions.
2 Downlink antenna techniques Space time techniques for downlink antenna solutions Beamforming Diversity ‘Narrow’ aperture ‘Wide’ aperture Signal ‘spatially coloured’ Signal ‘spatially white’ Multiple Input Multiple Output (MIMO) Exploits parallelism and MIMO channel Planewave beamforming Fixed (switched) beam ‘Bearing estimation’ Feedback/TDD diversity Selective transmit diversity TxAA and pre-RAKE Feedforward MIMO Space time trellis Space time block codes Layered space time coding Space time turbo trellis Non-plane beamforming Max SINR Min BER Feedforward diversity Feedback MIMO Delay Diversity (DD) Eigenmode STC Code Word Diversity (CWD) Water pouring STC Orthogonal Transmit.
All IP in 3G CDMA Networks: The UMTS Infrastructure and Service Platforms for Future Mobile Systems by Jonathan P. Castro