TY - GEN
T1 - How to eliminate shadow fading in a cellular wireless system
AU - Abdallah, M. N.
AU - Sarkar, T. K.
AU - Salazar-Palma, M.
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/10/16
Y1 - 2015/10/16
N2 - In this paper, we show how to eliminate shadow fading in cellular wireless system and discuss the main reason for such a phenomenon. One can deploy the transmitting antenna closer to the ground. In that case, the region of the variation in the field strength (shadow fading region) would be quite small and the field strength will decay monotonically inside the remainder of the cell area. We can improve the performance even more by titling the antenna up toward the sky to keep the slope of decay close to the free space case, i.e. -20 dB/decade, instead of -30 dB/decade or -40 dB/decade in the case of vertically oriented half-wave dipole. We used a simulation tool called AWAS to simulate an antenna radiating over an imperfect ground. This code uses Green's function based on Sommerfeld's formulation.
AB - In this paper, we show how to eliminate shadow fading in cellular wireless system and discuss the main reason for such a phenomenon. One can deploy the transmitting antenna closer to the ground. In that case, the region of the variation in the field strength (shadow fading region) would be quite small and the field strength will decay monotonically inside the remainder of the cell area. We can improve the performance even more by titling the antenna up toward the sky to keep the slope of decay close to the free space case, i.e. -20 dB/decade, instead of -30 dB/decade or -40 dB/decade in the case of vertically oriented half-wave dipole. We used a simulation tool called AWAS to simulate an antenna radiating over an imperfect ground. This code uses Green's function based on Sommerfeld's formulation.
UR - http://www.scopus.com/inward/record.url?scp=84971449670&partnerID=8YFLogxK
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U2 - 10.1109/APWC.2015.7300143
DO - 10.1109/APWC.2015.7300143
M3 - Conference contribution
AN - SCOPUS:84971449670
T3 - Proceedings of the 2015 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications, IEEE APWC 2015
SP - 80
EP - 81
BT - Proceedings of the 2015 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications, IEEE APWC 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 5th IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications, IEEE APWC 2015
Y2 - 7 September 2015 through 11 September 2015
ER -