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Joint Closed-Loop Power Control and Adaptive Beamforming for Wireless Networks with Antenna Arrays in a 2D Urban Environment

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DOI: 10.4236/wsn.2010.211105    5,924 Downloads   9,406 Views   Citations

ABSTRACT

The interference reduction capability of antenna arrays and the power control algorithms have been considered separately as means to decrease the interference in wireless communication networks. In this paper, we propose smart step closed-loop power control (SSPC) algorithm in wireless networks in a 2D urban environment with constrained least mean squared (CLMS) algorithm. This algorithm is capable of efficiently adapting according to the environment and able to permanently maintain the chosen frequency response in the look direction while minimizing the output power of the array. Also, we present switched-beam (SB) technique for enhancing signal to interference plus noise ratio (SINR) in wireless networks. Also, we study an analytical approach for the evaluation of the impact of power control error (PCE) on wireless networks in a 2D urban environment. The simulation results indicate that the convergence speed of the SSPC algorithm is faster than other algorithms. Also, we observe that significant saving in total transmit power (TTP) are possible with our proposed algorithm. Finally, we discuss three parameters of the PCE, number of antenna elements, and path-loss exponent and their effects on capacity of the system via some computer simulations.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

M. Moghadam, H. Bakhshi and G. Dadashzadeh, "Joint Closed-Loop Power Control and Adaptive Beamforming for Wireless Networks with Antenna Arrays in a 2D Urban Environment," Wireless Sensor Network, Vol. 2 No. 11, 2010, pp. 869-878. doi: 10.4236/wsn.2010.211105.

References

[1] J. T. Wang, “Admission Control with Distributed Joint Diversity and Power Control for Wireless Networks,” IEEE Transactions on Vehicular Technology, Vol. 58, No. 1, 2009, pp. 409-419.
[2] A. Abrardo and D. Sennati, “On the Analytical Evaluation of Closed-Loop Power-Control Error Statistics in DS-CDMA Cellular Systems,” IEEE Transactions on Vehicular Technology, Vol. 49, No. 6, 2000, pp. 2071 -2080.
[3] L. Carrasco and G. Femenias, “Reverse Link Performance of a DS-CDMA System with both Fast and Slow Power Controlled Users,” IEEE Transactions on Wireless Communications, Vol. 7, No. 4, 2008, pp. 1255-1263.
[4] L. Qian and Z. Gajic, “Variance Minimization Stochastic Power Control in CDMA System,” IEEE Transactions on Wireless Communications, Vol. 5, No. 1, 2006, pp. 193- 202.
[5] M. Rintamaki, H. Koivo and I. Hartimo, “Adaptive Closed-Loop Power Control Algorithms for CDMA Cellular Communication Systems,” IEEE Transactions on Vehicular Technology, Vol. 53, No. 6, 2004, pp. 1756 -1768.
[6] J. Wang and A. Yu, “Open-Loop Power Control Error in Cellular CDMA Overlay Systems,” IEEE Journal on Selected Areas in Communications, Vol. 19, No. 7, 2001, pp. 1246-1254.
[7] M. Dosaranian-Moghadam, H. Bakhshi, G. Dadashzadeh and P. Rahmati, “Adaptive Beamforming Method Based on Constrained LMS Algorithm for Tracking Mobile User,” IEEE Global Mobile Congress, Shanghai, China, October 2009, pp. 1-6.
[8] M. Dosaranian-Moghadam, H. Bakhshi and G. Dadashzadeh, “Adaptive Beamforming Method Based on Closed -Loop Power Control for DS-CDMA Receiver in Multipath Fading Channel,” Accepted for publication in the IEEE International Conference on Communication Systems, Singapore, 17-20 November 2010.
[9] M. Dosaranian-Moghadam, H. Bakhshi and G. Dadashzadeh, “Interference Management for DS-CDMA Systems through Closed-Loop Power Control, Base Station Assignment, and Beamforming,” Journal of Wireless Sensor Network, Vol. 2, No. 6, 2010, pp. 472-482.
[10] M. Dosaranian-Moghadam, H. Bakhshi, G. Dadashzadeh and M. Godarzvand-Chegini, “Joint Base Station Assignment, Power Control Error, and Adaptive Beamforming for DS-CDMA Cellular Systems in Multipath Fading Channels,” Accepted for publication in IEEE Global Mobile Congress, Shanghai, China, 18-19 October 2010.
[11] M. Dosaranian-Moghadam, H. Bakhshi and G. Dadashzadeh, “Joint Centralized Power Control and Cell Sectoring for Interference Management in CDMA Cellular Systems in a 2D Urban Environment,” Journal of Wireless Sensor Network, Vol. 2, No. 8, 2010, pp. 599-605.
[12] F. Rashid-Farrokhi, L. Tassiulas and K. J. Ray-Liu, “Joint Optimal Power Control and Beamforming in Wireless Networks using Antenna Arrays,” IEEE Transactions on Communications, Vol. 46, No. 10, 1998, pp. 1313-1324.
[13] M. Z. Shakir and T. S. Durrani, “Narrowband Beamforming Algorithm for Smart Antennas,” International Bhurban Conference on Applied Sciences & Technology, Islamabad, January 2007, pp. 49-54.
[14] X. Y. Sun, X. H. Lian and J. J. Zhou, “Robust Adaptive Beamforming Based on Maximum Likelihood Estimation,” International Conference on Microwave and Millimeter Wave Technology, Nanjing, China, Vol. 3, 2008, pp. 1137-1140.
[15] J. Litva and T. Kwok-Yeung, “Digital Beamforming in Wireless Communications,” Artech House, London, 1996.
[16] S. Haykin, “Adaptive Filter Theory,” 3th Edition, Prentice Hall, New Jersey, 1996.
[17] R. L. Peterson, R. E. Ziemer and D. E. Borth, “Spread-Spectrum Communications,” Prentice-Hall, New Jersey, 1995.
[18] A. Yener, R. D. Yates and S. Ulukus, “Interference Management for CDMA Systems through Power Control, Multiuser Detection, and Beamforming,” IEEE Transactions on Communications, Vol. 49, No. 9, 2001, pp. 1227 -1239.
[19] S. Kandukuri and S. Boyd, “Optimal Power Control in Interference-Limited Fading Wireless Channels with Outage Probability Specifications,” IEEE Transactions on Wireless Communications, Vol. 1, No. 1, 2002, pp. 46-55.
[20] S. Grandhi, R. Vijayan and D. Goodman, “Centralized Power Control in Cellular Radio Systems,” IEEE Transactions on Vehicular Technology, Vol. 42, No. 4, 1993, pp. 466-468.
[21] J. Zander, “Distributed Cochannel Interference Control in Cellular Radio Systems,” IEEE Transactions on Vehicular Technology, Vol. 44, No. 3, 1992, pp. 305-311.
[22] S. Grandhi, R. Vijayan and D.Goodman, “Distributed Power Control in Cellular Radio Systems,” IEEE Transactions on Communications, Vol. 42, No. 2/3/4, 1994, pp. 226-228.
[23] A. Kurniawan, “Effect of Feedback Delay on Fixed Step and Variable Step Power Control Algorithm in CDMA Systems,” IEEE International Conference on Communication Systems, Singapore, Vol. 2, 2002, pp. 1096-1100.
[24] J. M. Romero-Jerez, C. Tellez-Labao and A. Diaz-Estrella, “Effect of Power Control Imperfections on the Reverse Link of Cellular CDMA Networks under Multipath Fading,” IEEE Transactions on Vehicular Technology, Vol. 53, No.1, 2004, pp. 61-71.
[25] B. Allen and M. Beach, “On the Analysis of Switched-Beam Antennas for the W-CDMA Downlink,” IEEE Transactions on Vehicular Technology, Vol. 53, No. 3, 2004, pp. 569-578.
[26] G. E. Corazza, G. De Maio and F. Vatalaro, “CDMA Cellular Systems Performance with Fading, Shadowing, and Imperfect Power Control,” IEEE Transactions on Vehicular Technology, Vol. 47, No. 2, 1998, pp. 450-459.

  
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