Proposed cellular network for Indian conditions for enhancement of spectral density and reduction of power consumption & RF pollution

Abstract

Abstract-With the exponentially increasing demand for wireless communications the capacity of current cellular systems will soon become incapable of handling the growing traffic. Since radio frequencies are diminishing natural resources, there seems to be a fundamental barrier to further capacity increase. The solution can be found by using smart antenna systems.Smart or adaptive antenna arrays consist of an array of antenna elements with signal processing capability that optimizes the radiation and reception of a desired signal, dynamically. Smart antenna can place nulls in the direction of interferers via adapting adaptive updating of weights linked to each antenna element. They thus cancel out most of the cochannel interference resulting in better quality of reception and lower dropped calls. Smart antenna can also track the user within a cell via direction of arrival algorithms. This paper focuses on about the smart antenna in hierarchical cell clustering (overlay-underlay) with demand based frequency allocation techniques in cellular mobile radio networks in INDIA.

Hybrid Spectral Efficient Cellular Network Deployment to Reduce RF Pollution

“…It has been proved beyond doubt that incorporation of intelligent / adaptive antenna along with A-SDMA approach alone can enhance spectral density, reduce power consumption and RF pollution drastically in cellular communication network [1], [19], [20]. In addition to it inclusion of remote RF technology will further enhance capacity of the network.…”

Hierarchical Cellular Structures in High-Capacity Cellular Communication Systems

“…It is also assumed that the MS is equipped with a Rake receiver capable of performing "maximal ratio combining" of the signals it receives from the transmitting BSs [26]. The following cellular structure will be used for dense urban areas [27]: 1) Macro cell will be marked for fast traffic and micro cell will be marked for slow traffic in hierarchical structure. The RF resources will be dynamically allocated between macro and micro cells on the basis of velocity estimation using adaptive array antennas [24].…”