Open Access Open Access  Restricted Access Subscription or Fee Access

Interference Suppression Using Smart Antenna in CDMA Using a Novel Algorithm

Dilip Mali, Freweyni Kidane, Tawatu Abreha, Sinshaw Bekele


Smart antennas are usually employed at the base stations to radiate narrow beams to serve different users by using spatial processing. In this paper the use of adaptive antenna arrays on CDMA networks to suppress cochannel interference is carried out using newly proposed SMI-RLS algorithm which will compensate the singularity problem of SMI algorithm and minimizes the complexity of RLS algorithm. The simulation results proved that the proposed SMI-RLS algorithm is able to place deeper nulls than the other algorithms and it has minimum complexity compared to RLS algorithm.


Interference Suppression, Smart Antennas, Adaptive Beam Forming.

Full Text:



Constantine A. Balanis, Antenna Theory: Analysis and Design, 3rd edition, John Wiley & Sons, 2005.

R.K. Jain, Sumit Katiyar and N. K. Agrawal, “Smart Antenna for Cellular Mobile Communication”, VSRD International Journal of Electrical, Electronics and Communication Engineering, Vol. 1, No. 9, pp. 530-541, 2011.

D. Jayalakshmi, T. V. U. Kiran Kumar and Racheline Suja “Smart Antenna”, Indian Journal of Innovations and Developments, Vol. 1, Issue. 10, pp. 749-754, Oct. 2012.

D.-C. Changand C.-N. Hu, “Smart Antennas for advanced communication Systems,” Invited Paper, Proceedings of the IEEE, Vol.100, No. 7, pp. 2233-2249, July 2012

Adheed H. Sallomi, Haitham H. Mikhlif and Sana R. Salim, “Linear Adaptive Antenna Array Geometry Effects on Radiation Pattern”, Iraqi Journal of Applied Physics Letters, pp. 3-6, Mar. 2010.

A. J. Paulraj, D. Gesbert and C. Papadias, “Smart Antennas for Mobile Communications”, Encyclopedia for Electrical Engineering, John Wiley Publishing Co., 2000.

Leandro Morales “Smart Antenna Adaptive Algorithms Development for 3G Cellular Communication with Training Signal”, Computing Research Conference, Electrical and Computer Engineering and Computer Science Department, Polytechnic University of Puerto Rico, Puerto Rico, 2004.

J. Rugamba, L. W. Snyman, A. Kurien and D. Chatelain, “Viability of Using Intelligent (Smart) Antenna Systems in GSM Cellular Networks in Africa”, IEEE Electron Devices for Microwave and Optoelectronic Applications, pp. 124-130, Nov. 2004.

G. V. S. Karthik, Md. Zia Ur Rahman and T. Anusha, “Algorithm for Steering Smart Antennas: An Application to Wireless Communications”, International Journal of Research and Reviews in Wireless Communication (IJRRWC), Vol. 1, No. 3, pp. 37-42, Sept. 2011.

SavitriKatariya, “A Survey on Smart Antenna System”, International Journal of Electronics and Communication Technology, Vol. 2, Issue 3, pp. 123-126, Sept. 2011.

SurayaMubeen, A.M. Prasad and A. Jhansi Rani, “Smart Antenna its Algorithms and Implementation”, International Journal of Advanced Research in Computer Science and Software Engineering, Vol. 2, Issue 4, pp. 97-101, Apr. 2012.

K. Meena alias Jeyanthi and A. P. Kabilan “A Simple Adaptive Beam Forming Algorithm with Interference Suppression”, International Journal of Engineering and Technology, vol. 1, No. 1, pp. 67-70, 2009.

Muhammed Salah Sadiq, “Computer Modeling of Smart Antenna System”, Al-Qadisiya Journal for Engineering Sciences, Vol. 4, No. 3, pp. 327-339, 2011.

Kiran K. Shetty “A Novel Algorithm for Uplink Interference Suppression using Smart Antennas in Mobile Communications” M.S thesis, Famu-Fsu College of Engineering, the Florida state university, Feb. 2004.

Ch. Santhi Rani, P. V. Subbaiah, K. Chennakesava Reddy and S. Sudha Rani, “LMS and RLS algorithm for Smart Antennas in a W-CDMA Mobile Communication Environment”, ARPN Journal of Engineering and Applied Sciences, Vol. 4, No. 6, pp. 78-88, Aug. 2009

Ahmed El Zooghby, “Smart Antenna Engineering”, Mobile Communication series, Artech House, 2005.

Smart Antenna Systems, web ProForum Tutorials,Copyright © The International Engineering Consortium, pp. 1-29, 2007.

S. F. Shaukat, Mukhtarul Hassan, R. Farooq, H. U. Saeed and Z. Saleem, “Sequential Studies of Beam Forming Algorithms for Smart Antenna Systems”, World Applied Sciences Journal, Vol. 6, No. 6, pp. 754-758, 2009.

Kristin Raudonis, “Wireless Networks: Improving Performance Using Smart Antennas”, Computing Research, Department of Computing Sciences, 3rdVillanova University Undergraduate Computer Science Research Symposium, Villanova University Villanova, Dec. 2009.

Neha Shrivastava, Sudeepn Baudha, Rahul Singh Rathore and Bharti Tiwari, “Study and Simulation of Smart Antenna using SMI and CGM algorithm”, International Journal of Engineering and Innovative Technology (IJEIT), Vol. 1, Issue 6, pp. 11-15, Jun. 2012.

Kok Keng Ng, “Smart Antenna Application in DS-CDMA Mobile Communication System”, M.S thesis, Naval Postgraduate School, Monterey California, Sept. 2002.

E. Elethrriou, and D. Falconer, “Tracking Properties of Steady State Performance of RLS Adaptive Filter Algorithms” IEEE Trans. Acoust. Speech, Signal Processing, vol. ASSP-34, pp. 1097-1110, 1986

Khyati R. Zalawadia, Twinkle V. Doshi, U D Dalal, “Adaptive Beam Former Design using RLS Algorithm for Smart Antenna System”, Proc. of IEEE International Conference on Computational Intelligence and Communication Systems, pp 102-106, 2011.

M. Yasin, Pervez Akhtar and M. Junaid Khan, “Tracking Performance of RLS and KAPA Algorithms for a Smart Antenna System”, World Applied Sciences Journal 10 (Special Issue of Computer and Electrical Engineering), pp. 1-9, 2010.

Constantin Paleologu, Jacob Benesty, and Silviu Ciochina “A Robust Variable Forgetting Factor Recursive Least-Squares Algorithm for System Identification”, IEEE Signal Processing Letters, Vol. 15, pp 597-600, 2008.

Frank B. Gross, Smart Antenna for Wireless Communications with Matlab, McGraw-Hill Companies, 2005.


  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.