Abstract
Modern and fast developments of wireless technologies have directed to a great demand for resources. It can be seen in the study that the range of existing spectrum is not used effectively, therefore the frequency band should be observed to ensure proper usage and to have the information of primary or licensed user is very much essential. In this research work uplink of LTE (Long-Term Evolution) is observed through MF (Matched Filter) spectrum sensing technique of CR (Cognitive Radio) network. This method examines the existence of signals in minimum possible time, reduces the hindrances between secondary users, increases accurateness of sensing and provides finest choice of threshold. In Uplink the System model which is used is known as SC-FDMA (Single Carrier Frequency Division Multiple Access). Entire simulation/results are prepared in MATLAB environment. This study also provides graphical contrast of simulated and theoretical results of matched filter and energy detection technique.
Highlights
Modern and fast developments of wireless technologies have directed to a great demand for resources
The best known noncooperative detection techniques used for spectrum sensing are: energy detection, cyclo stationary, wavelength and matched filter [2]
Different sub-carriers of orthogonal are used on the transmission side of the SC-FDMA to transmit data representations in succession [7]
Summary
Mkind of applications to voice communications type; these technologies types require higher transmission data rates, the radio band has a number of constraints that it does not accommodate a growing amount of higher rates of data. Licensing of spectrum range is precious technique that guarantees an inefficient use of the spectrum band. In general user service quality is decreased by crowded band Most current techniques adopt Sc-FDMA for transmission of the uplink. It can make use of multiplexing of orthogonal frequency, modulation of single carrier and equalization of frequency domain for the performance improvement of PAPR (Powered Air Purifying Respirator). In LTE system, for transmission over uplink technique SCFDMA has been selected, unlike OFDMA (Orthogonal Frequency Division Multiple Access) it changes signal time domain into frequency domain signal which can be used to improve throughput of system. Mobile terminals can take advantage in terms of power transmit energy from feature known as low peak to average power [6]
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