New Ideas to Improve the Performance of Frequency Invariant Wideband Antenna Array Beamforming

Subject Areas : Majlesi Journal of Telecommunication Devices

Shahriar  Shirvani Moghaddam ¹ (Shahid Rajaee Teacher Training University)

Received: 2013-10-08 Accepted : 2013-10-08 Published : 2013-01-01

Keywords: en,

Abstract :

Nowadays, it is very important to receive high quality wideband signal in the presence of interference and unwanted environmental effects. To achieve this goal, one way is to improve the quality of signal and decrease the undesired phenomena by antenna array beamforming. In this paper, first we investigate the problem of wideband beamforming in frequency domain considering the effect of interference signals. Then, we present a new low-complex efficient idea to jointly decrease the effect of interference signal and increase the Signal to Interference plus Noise Ratio (SINR). Afterwards, another idea is proposed which increases the value of SINR using some changes in the main beampattern generator. Finally, the performance of new proposed method is compared with previous work by simulations in MATLAB software. Simulation results show that the proposed wideband frequency invariant beamforming approach offers faster convergence and higher gain for main signal with respect to previous work.

References:

[1] X. Zhang, W. Ser, Z. Zhang, and A. Kumar Krishna, “Selective Frequency Invariant Uniform Circular Broadband Beamformer,” EURASIP Journal on Advances in Signal Processing, pp. 1-16, 2011.

[2] M. Joho, G. S. Moschytz, “Adaptive Beamforming with Partitioned Frequency-Domain Filters,” IEEE ASSP Workshop on Applications of Signal Processing to Audio and Acoustics, 1997.

[3] M. S. Brandstein and D. Ward, Eds, Microphone Arrays: Signal Processing Techniques and Applications, Springer, Berlin, 2001.

[4] M. Ghavami, L. B. Michael, and R. Kohno, Ultra Wideband Signals and Systems in Communication Engineering, John Wiley & Sons, Ltd, Chichester, England, 2004.

[5] S. Bojanapally and R.S. Kshetrimayum, “Wideband Antenna Array Beamforming using FIR Filter,” International Conference on Computing Communication and Networking Technologies (ICCCNT, pp. 1-4), 2010.

[6] W. Liu, “Adaptive Wideband Beamforming with Sensor Delay-lines,” Signal Processing, Vol. 89, pp. 876-882, 2009.

[7] S. Shirvani Moghaddam and N. Solgi, “A comparative Study on TDL and SDL Structure for Wideband Antenna Array beamforming,” International Journal on Communications Antenna and Propagation (IRECAP), Vol. 1, No. 4, pp. 388-395, August 2011.

[8] X. Haung and Y. Jay Guo, “Frequency-Domain AOA Estimation and Beamforming with Wideband Hybrid Arrays,” IEEE Transactions on Wireless Communications, Vol. 10, No. 8, August 2011.

[9] G. Hampson and A. Paplinski, “Simulation of Beamforming Techniques for Linear Array of Transducers,” Technical Report 95-3, MONASH Australia’s International University, March 1995.

[10] R. Smith, “Constant Beamwidth Receiving Arrays for Broadband Sonar Systems,” Acoustica, Vol. 23, pp. 21–26, 1970.

[11] E. L. Hixson and K.T. Au, “Widebandwidth Constant Beamwidth Acoustic Array,” Journal of the Acoustic Society of America, Vol. 48, No. 1, pp. 117, July 1970.

[12] J. H. Doles and F. D. Benedict, “Broad-band Array Design using the Asymptotic Theory of Unequally Spaced Arrays,” IEEE Transactions on Antennas and Propagation, Vol. 36, pp. 27–33, January 1988.

[13] M. M. Goodwin and G.W. Elko, “Constant Beamwidth Beamforming,” in Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, Minneapolis, USA, April, Vol. 1, pp. 169-172, 1993.

[14] T. Chou, “Frequency-independent Beamformer with Low Response Error,” in Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, Detroit, USA, Vol. 5, pp. 2995–2998, May 1995.

[15] D. B. Ward, R. A. Kennedy, and R.C. Williamson, “Theory and Design of Broadband Sensor Arrays with Frequency Invariant Far-field Beampatterns,” Journal of the Acoustic Society of America, Vol. 97, No. 2, pp. 1023–1034, February 1995.

[16] D. B. Ward, R.A. Kennedy, and R.C. Williamson, “FIR Filter Design for Frequency Invariant Beamformers,” IEEE Signal Processing Letters, Vol. 3, pp. 69–71, March 1996.

[17] W. Liu, “Wideband Beamforming for Multipath Signals Based on Frequency Invariant Transformation,” International Journal of Automation and Computing, pp. 420-428, August 2012.