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Recent works on the future 5G cellular communication proposed that the enormous raw bandwidth availability of the millimeter-wave (mmWave) frequencies is an excellent opportunity to increase data capacity and channel capacity. However, mmWave transmission requires beamforming to overcome the high path loss, as well as other losses due to rain and oxygen absorption and higher noise floor associated...
Cognitive radio (CR) has been proposed to solve the problem of spectrum under utilisation by opportunistically accessing unutilised bands. In this research, the problem of resource allocation in OFDM-CR networks has been examined. The main objective of this study, is to provide better control management for the interference to the primary user (PU) while maintain low complexity to the proposed algorithm...
Network MIMO is a feasible technique that can significantly improve the performance of wireless communication systems by canceling the Inter-cell Interference (ICI). Dynamic Fractional Frequency Reuse (DFFR) is the technique to mitigate ICI in LTE-Advanced system, which improve throughput and capacity, especially for the cell-edge users (CEUs). Recent research has shown that the impact of DFFR scheme...
The orthogonal frequency division multiplexing (OFDM) has attracted many researchers in the last decade due to the many advantages of this system. The intersymbol interference (ISI) free transmission and the high bit rate are two of the OFDM's advantages. Although, OFDM systems as the other communication systems, they need to estimate the channel state information to reduce the Bit Error Rate (BER),...
One of the efficient ways to transmit high data rate in a wireless network is by employing a multiple antenna transmission scheme, known as the multiple-input multiple-output (MIMO). One of the MIMO schemes, known as Spatial Multiplexing (SM) relies on the linear independence data streams from different transmit antennas to exploit the channel capacity. Consequently, SM suffers considerably from the...
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