Khalid G Samarah

Khalid G Samarah
Mu’tah University · Electrical Engineering Department

Doctor of Engineering

About

11
Publications
8,106
Reads
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17
Citations
Citations since 2017
3 Research Items
10 Citations
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201720182019202020212022202301234

Publications

Publications (11)
Article
Full-text available
Orthogonal Frequency Division Multiplexing had been chosen to be the main candidate as the air interface for the high data rate transmission systems. Orthogonal Frequency Division Multiplexing offers high spectral efficiency since it makes use of the available bandwidth due to orthogonality subcarriers behaviour. One of the drawbacks of Orthogonal...
Article
Full-text available
Orthogonal frequency division multiplexing (OFDM) is a promising candidate for cognitive radio transmission. OFDM supports high data rates that are robust to channel impairments. However, one of the biggest problems for OFDM transmission is high out-off-band radiation, which resultes from the sidelobes of the OFDM sub-carriers. These sidelobes are...
Article
Full-text available
This paper aims to present an approximate location of a Mobile Station (MS) in Microcell zone concept in GSM system based on retrieving the Timing Advance (TA) from the Base Station (BS). In microcell concept,\ three or more zone sites are connected to a single BS and share the same radio equipment. Therefore, a MS travels within the cell uses the...
Article
Full-text available
Localization of Mobile Stations (MS) in cellular communication systems is an interesting area of research, where large number of techniques is used to reduce the errors in estimating the position of the MS. The MUSIC DOA estimation algorithm (Multiple Signal Classification (MUSIC) with Direction of Arrival (DOA) algorithm) using only ONE Base Stati...
Conference Paper
Full-text available
A printed crescent-shaped monopole MIMO antenna is presented for handheld wireless communication devices. The mutual coupling between the two antenna elements can be minimised by implementing a I-shaped common radiator. Both the simulated and measured results agree that the antenna covers the operating frequency band from 1.6 to 2.8 GHz with the re...
Conference Paper
Full-text available
An assessment of the performance of OFDM transmissions over the wideband mobile radio channel is reported. The simulation in MATLAB /Simulink is based on the CODIT channel model. The results show that BER deteriorates significantly as the mobile velocities increase from 0 to 30 m/s. Significant variability in the BER for a given channel type is qua...
Article
Full-text available
An ongoing challenge in communications is to provide ever faster, broadband multi-media access to mobile terminals. In the mobile multipath environment, performance is affected by both frequency-selectivity and Doppler spread. Realistic channel simulators are required to compare competing systems on a fair basis. The RACE code-division testbed (COD...
Conference Paper
Full-text available
Broadband transmission at high data rates with high mobility speeds over wireless propagation channels is subject to both time dispersion caused by the multipath channel and frequency dispersion or Doppler Spread. orthogonal frequency division multiplexing (OFDM), with its variants, represents a candidate modulation technique for the air interface...

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