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Space Shift Keying (SSK) is a novel low-complexity digital modulation technique for multiple antenna wireless systems. In SSK, blocks of data are encoded in the index of a specific transmit antenna of the antenna array, which is switched on for data transmission while all the other antennas radiate no power. Recent results have shown that SSK can outperform, with low computational complexity, conventional...
The fast emerging technology of femtocells, through the utilization of existing IP infrastructures, promises to improve critical performance indicators in cellular networks, such as coverage and capacity, with minimum cost. However, the random placement of femtocells contrary to the structured deployment of the current cellular network raises challenges for interference management. In this context,...
The performance of six configurations for focused array antennas is investigated. The proposed arrays are in the form of; Ring, Four corners with central elements, Ring with Cross, Four orthogonal arrows rotated by 45 degree, Octal with Cross and Octal with Cross without central elements arrays. The studied parameters are the size of focal spot, the depth of field, the level of field at the focal...
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