By Ajay R. Mishra
A hugely functional consultant rooted in conception to incorporate the mandatory heritage for taking the reader during the making plans, implementation and administration phases for every form of mobile community.
Present day mobile networks are a mix of the applied sciences like GSM, EGPRS and WCDMA. They even comprise good points of the applied sciences that may lead us to the fourth iteration networks. Designing and optimising those complicated networks calls for a lot deeper knowing. Advanced mobile community making plans and Optimisation provides radio, transmission and middle community making plans and optimisation features for GSM, EGPRS and WCDMA networks with concentrate on functional features of the sphere. specialists from all the domain names have introduced their stories lower than one publication making it a necessary learn for layout practitioners, specialists, scientists and scholars operating within the mobile industry.
- Focus on radio, transmission and center community making plans and optimisation
- Covers GSM, EGPRS, WCDMA community making plans & optimisation
- Gives an advent to the networks/technologies past WCDMA, and explores its present prestige and destiny potential
- Examines the complete variety of capability eventualities and difficulties confronted by means of those that layout mobile networks and gives suggestion and ideas all subsidized up with real-world examples
This textual content will function a instruction manual to somebody engaged within the layout, deployment, functionality and enterprise of mobile Networks.
"Efficient making plans and optimization of cellular networks are key to assure more suitable caliber of carrier and person adventure. additionally they shape the fundamental beginning for the luck of destiny expertise improvement, making this booklet a necessary learn at the highway in the direction of 4G."
—Tero Ojanperä, leader expertise Officer, Nokia Networks
Read or Download Advanced Cellular Network Planning and Optimisation: 2G/2.5G/3G...Evolution to 4G PDF
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Additional resources for Advanced Cellular Network Planning and Optimisation: 2G/2.5G/3G...Evolution to 4G
2 Typical network quality targets Quality parameter Target value Drop call rate Handover success rate Call attempt success rate DL quality < 5% > 95 % > 98 % ≥RXQUAL 5 and thus need to be avoided. The target value for RXQUAL can be, for example, 95 % or the time equal or better than 5. 2. The coverage and quality targets need to be considered in connection with the network evolution strategy. The subscriber forecast predicts the need and pace of network enlargement. Due to this obvious connection it is important to verify the subscriber forecast from time to time and keep it up to date.
4 Third Generation Cellular Networks The third generation cellular networks were developed with the aim of offering high speed data and multimedia connectivity to subscribers. The International Telecommunication Union (ITU) under the initiative IMT-2000 has defined 3G systems as being capable of supporting high speed data ranges of 144 kbps to greater than 2 Mbps. A few technologies are able to fulfil the International Mobile Telecommunications (IMT) standards, such as CDMA, UMTS and some variation of GSM such as EDGE.
6 27 Spreading and de-spreading Spreading and De-spreading The spreading codes are Walsh–Hadamard codes: orthogonal variable spreading factor (OVSF) codes. The Walsh–Hadamard codes are selected because the code property is called orthogonality. By definition, orthogonality is a property of two codes where their cross-correlation equals zero. In a more practical example, orthogonality implies that information coded with orthogonal codes can be separated without incurring any errors. Multiplying a baseband chip sequence with one spreading code and multiplying the same baseband chip sequence with another spreading code, both change the order of bits in the baseband chip sequence.