2 research outputs found
An Intelligent Approach for Dense Urban Area in existing 2G / 2.5G
In the prevailing scenario audio, video, data services (i.e. internet),
multimedia and broadcasting etc. are being integrated. Decreasing cell size
increases capacity but at the same time increases fluctuation and interference
too. The intelligence approach is the only answer in developing countries where
frequency and power are scarce resources. In this paper, we have tried to
integrate all proven technologies in networking such as in-building network,
micro zone, intelligent micro cell, deployment along city streets, tunnels,
subway coverage etc. along with adaptive frequency allocation in hierarchical
approach with the help of adaptive / intelligent antenna system. A-SDMA
approach will further enhance spectral efficiency as well as QoS (Quality of
Service). It can be proved beyond doubt that this integrated approach will
convert 2G / 2.5G systems capable of handling the prevailing demand at reduced
cost. In addition to it, integrated approach will save power and reduce RF
pollution. In this paper we have explained the ill effect of cellular growth in
terms of health hazard and increased power consumption. We have also suggested
ways and means to overcome these problems (spectral density / capacity, QoS,
power consumption and RF pollution etc.).Comment: 6 pages, 7 figures. arXiv admin note: substantial text overlap with
arXiv:1110.262
Hierarchical Cellular Structures in High-Capacity Cellular Communication Systems
In the prevailing cellular environment, it is important to provide the
resources for the fluctuating traffic demand exactly in the place and at the
time where and when they are needed. In this paper, we explored the ability of
hierarchical cellular structures with inter layer reuse to increase the
capacity of mobile communication network by applying total frequency hopping
(T-FH) and adaptive frequency allocation (AFA) as a strategy to reuse the macro
and micro cell resources without frequency planning in indoor pico cells [11].
The practical aspects for designing macro- micro cellular overlays in the
existing big urban areas are also explained [4]. Femto cells are inducted in
macro / micro / pico cells hierarchical structure to achieve the required QoS
cost effectively.Comment: 7 pages, 8 figures, International Journa