Efficient Blind Beamforming Algorithms for Phased Array and MIMO RADAR

Abstract

In this paper, we devised two new adaptive blind beamformers based on well-known constant modulus algorithm (CMA) and least square CMA (LS-CMA). First, we improved the convergence rate of CMA and then applied Hanning window to both CMA and LS-CMA to reduce side-lobe level (SLL). These new algorithms are Hanning window CMA (HW-CMA) and Hanning window LS-CMA (HW-LS-CMA),- Simulation results show the significant improvement in the convergence rate and drastic reduction in the SLL. The proposed HW-CMA converges within less than 10 iterations and the SLLs of both algorithms are reduced below −44 dB with the improvement of 33 dB as compared to classical CMA. Hence the proposed beamformers can be used in advanced communication applications.

KEYWORDS:

• Adaptive beamforming
• CMA
• Convergence
• Hanning window
• LS-CMA
• MIMO RADAR
• Phase array radar

ACKNOWLEDGEMENTS

Authors are thankful to the anonymous reviewers.

DISCLOSURE STATEMENT

No potential conflict of interest was reported by the authors.

Additional information

Notes on contributors

Veerendra Dakulagi

Veerendra Dakulagi received his BE degree in Electronics and Communication Engineering and MTech (PE) degree from Visvesvaraya Technological University, Belagavi, India, in 2007 and 2011, respectively. He is currently pursuing the PhD degree from the same university. He has been working as an assistant professor in Guru Nanak Dev Engineering College, Bidar, India, since 2010. He has published more than 30 research papers in many referred journals and conferences including IEEE, Elsevier, and IETE. He is an editorial board member of many international and national journals. His field of interests are microwaves, antennas, wireless and digital communications. He is an associate member of IETE.

E-mail: [email protected]

Md Bakhar

Md Bakhar received his BE degree in Electronics and Communication Engineering from Bapuji Institute of Engineering and Technology, Davangere, India, in 1995 and ME degree in communication systems from P.D.A Engineering College, Gulbarga, India, in 1998. He has awarded PhD degree in Applied Electronics from Gulbarga University, Gulbarga, India, in the year 2013. He has been working as a professor in Guru Nanak Dev Engineering College, Bidar, India, since 2005, and he is a registered supervisor in VTU, Belgaum. His field of interests are microwaves, antennas, wireless and digital communications.

E-mail: [email protected]