Capacity Enhancement in Wireless Networks using Directional Antennas
One of the biggest drawbacks of the wireless
environment is the limited bandwidth. However, the users sharing
this limited bandwidth have been increasing considerably. SDMA
technique which entails using directional antennas allows to increase
the capacity of a wireless network by separating users in the medium.
In this paper, it has been presented how the capacity can be enhanced
while the mean delay is reduced by using directional antennas in
wireless networks employing TDMA/FDD MAC. Computer
modeling and simulation of the wireless system studied are realized
using OPNET Modeler. Preliminary simulation results are presented
and the performance of the model using directional antennas is
evaluated and compared consistently with the one using
omnidirectional antennas.
[1] T.S. Rappaport, Wireless Communications, Principles and Practice.
Englewood Cliffs, Prentice Hall, 1996.
[2] J.C. Liberti, T.S. Rappaport; "Smart Antennas for Wireless
Communications: IS-95 and Third Generation CDMA Applications".
Prentice Hall, Upper Saddle River, 1999.
[3] E. Ulukan, Wireless LANS with Smart Antennas, M.Sc Thesis,
University of Sabanc─▒, Turkey, 2005.
[4] M. Chryssomallis, "Smart Antennas", IEEE Antennas and Propagation
Magazine, Vol. 2, No 3, June 2000, pp.129-136.
[5] Lehne, Per H.; Pettersen, Magne; "An overview of smart antenna
technology for mobile communications systems", IEEE Communications
Surveys, Fourth Quarter 1999, Vol.2, No.4.
[6] R. Ramanathan, "On the performance of ad hoc networks using
beamforming antennas", Proc. ACM MobiHoc 2001, Long Beach,
California, USA, October 2001.
[7] Ulukan, E., Gurbuz, O., "Using Switched Beam Smart Antennas in
Wireless Ad Hoc Networks with Angular MAC Protocol", The Third
Annual Mediterranean Ad Hoc Networking Workshop, MEDHOCNET
2004, June 27-30, 2004.
[1] T.S. Rappaport, Wireless Communications, Principles and Practice.
Englewood Cliffs, Prentice Hall, 1996.
[2] J.C. Liberti, T.S. Rappaport; "Smart Antennas for Wireless
Communications: IS-95 and Third Generation CDMA Applications".
Prentice Hall, Upper Saddle River, 1999.
[3] E. Ulukan, Wireless LANS with Smart Antennas, M.Sc Thesis,
University of Sabanc─▒, Turkey, 2005.
[4] M. Chryssomallis, "Smart Antennas", IEEE Antennas and Propagation
Magazine, Vol. 2, No 3, June 2000, pp.129-136.
[5] Lehne, Per H.; Pettersen, Magne; "An overview of smart antenna
technology for mobile communications systems", IEEE Communications
Surveys, Fourth Quarter 1999, Vol.2, No.4.
[6] R. Ramanathan, "On the performance of ad hoc networks using
beamforming antennas", Proc. ACM MobiHoc 2001, Long Beach,
California, USA, October 2001.
[7] Ulukan, E., Gurbuz, O., "Using Switched Beam Smart Antennas in
Wireless Ad Hoc Networks with Angular MAC Protocol", The Third
Annual Mediterranean Ad Hoc Networking Workshop, MEDHOCNET
2004, June 27-30, 2004.
@article{"International Journal of Electrical, Electronic and Communication Sciences:63173", author = "Sedat Atmaca and Celal Ceken and Ismail Erturk", title = "Capacity Enhancement in Wireless Networks using Directional Antennas", abstract = "One of the biggest drawbacks of the wireless
environment is the limited bandwidth. However, the users sharing
this limited bandwidth have been increasing considerably. SDMA
technique which entails using directional antennas allows to increase
the capacity of a wireless network by separating users in the medium.
In this paper, it has been presented how the capacity can be enhanced
while the mean delay is reduced by using directional antennas in
wireless networks employing TDMA/FDD MAC. Computer
modeling and simulation of the wireless system studied are realized
using OPNET Modeler. Preliminary simulation results are presented
and the performance of the model using directional antennas is
evaluated and compared consistently with the one using
omnidirectional antennas.", keywords = "Directional Antenna, TDMA, SDMA,", volume = "2", number = "7", pages = "1525-6", }