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In this paper, main single carrier (SC) and multicarrier (MC) systems with frequency domain equalization (FDE) are reviewed with the objective to identify key features of the evolution path of air interfaces towards 4G. In particular, this paper shows that the FFT/IFFT operation can be seen as the concatenation of two operations: S/P conversion and spreading. We show that the transmitter of an OFDMA...
The evolution of air interfaces for 4G wireless systems often appears as an OFDM-CDMA battle which OFDM is going to win. This paper reviews this point of view and highlights some other features of this evolution. The paper presents a novel multicode DS-CDMA scheme which has the same advantages as OFDMA over frequency selective channels: good performance with low complexity one-tap receiver. Actually,...
Uniting computers, mobile phones, and personal devices is the goal of wireless personal area network (WPAN), which is meant to become a major part of future mobile communication network. Personal networks (PNs) extend the local scope of PANs by addressing virtual personal environments that span over a variety of communication architectures. PN is seen as the future for the wireless and mobile communications...
The ever-increasing growth of user demand, the limitations of the third generation of wireless mobile communication systems, and the emergence of new mobile broadband technologies on the market have brought researchers and industries to a thorough reflection on the fourth generation. Many prophetic visions have appeared in the literature presenting 4G as the ultimate boundary of wireless mobile communication...
Along with a vision that foresees the fourth generation (4G) as based on a cellular system that will also support short-range communications among the terminals, in this paper we propose an innovative geolocation scheme that combines long-and short-range location information, respectively retrieved by mean of a hybrid time of arrival/angle of arrival (TOA/AOA) technique in the cellular segment and...
The difficulties and technical limitations of the third generation (3G) of wireless mobile communication systems as well as the emergence of new mobile broadband technologies on the market have prompted university and industry researchers to thoroughly reflect on the fourth generation (4G) of these technologies. In this article, we outline the interaction between technology and society that shall...
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