Document Type : Original Research Paper


Digital Communications Signal Processing (DCSP) Research Lab., Faculty of Electrical Engineering, Shahid Rajaee Teacher Training University (SRTTU), Lavizan, 16788-15811, Tehran, Iran


In this paper, a new approach for estimating the number of wideband sources is proposed which is based on RSS or ISM algorithms. Numerical results show that the MDL-based and EIT-based proposed algorithm have
a much better detection performance than that in EGM and AIC cases for small differences between the incident angles of sources. In addition, for similar conditions, RSS algorithm offers higher detection probability
compared to ISM one, meanwhile it needs a heavy computational complexity than ISM. Furthermore, the effect of bandwidth on the performance of the proposed algorithm is studied. Simulation results show different detection probabilities for the proposed RSS and ISM algorithms meanwhile decreasing the bandwidth is the reason for increasing the performance of both RSS-EIT and ISM-EIT algorithms.


[1] Z. Heng-li, Z. Yong-Jun, “A novel method for fast estimating the number of wideband sources,” in Proc. 2008 Congress on Image and Signal Processing, vol. 5, pp. 24-28.
[2] S. ShirvaniMoghaddam, S. AlamsiMonfared, “Interference elimination and direction-of-arrival estimation of wideband cyclostationarycommunication signals,” Journal of Soft Computing and Information Technology, vol. 3, no. 2, pp. 9-20, Summer 2014 (In Farsi).
[3] S. ShirvaniMoghaddam, Z. Ebadi, and V. TabatabaVakili, “Modified FOC-based root-MUSIC algorithm for DOA estimation of coherent signal groups,” Life Science Journal, vol. 10, no. 1, pp. 843- 846, 2013.
[4] J. Foutz, A. Spanias, and M. Banavar, Narrowband Direction of Arrival Estimation for Antenna Arrays, Morgan & Clypool Publisher, 2008.
[5] R.O. Schmidt, “Multiple emitter location and signal parameter estimation,"IEEE Transactions on Antennas and Propagation, vol. 34, no. 3, pp. 276-280, 1986.
[6] M. Wax, T. Kailath, “Detection of signals by information theoretic criteria,” IEEE Transactions on Acoustics, Speech and Signal Processing, vol. 33, no. 2, pp. 387–392, Apr. 1985.
[7] D.B. Williams, Detection: Determining the Number of Sources, Digital Signal Processing Handbook. Chapter 67, CRC Press LCC, 1999.
[8] S. ShirvaniMoghaddam, S. Jalaei, “Determining the number of coherent sources using FBSS-based methods,” Frontiers in Science, vol. 2, no. 6, pp. 203-208, Dec. 2012.
[9] S. ShirvaniMoghaddam, S. Jalaei, “A new method for detecting the number of coherent sources in the presence of colored noise,” Journal of Information Systems and Telecommunication, vol. 1, no. 3, pp. 55-60, July/Sept. 2013.
[10] Y. Hou, D. Han, and Y. Jin, “New real-space direction finding method for wideband sources,” in 2009 IEEE Conference on Industrial Electronics and Applications (ICIEA), pp. 3965-3968.
[11] Y.S. Yoon, L.M. Kaplan, and J.H. McClellan, “TOPS: New DOA estimator for wideband signals,” IEEE Transactions on Signal Processing, vol. 54, no. 6, pp. 1977-1989, 2006.
[12] P. Pal, P. P. Vaidyanathan, “A novel autofocusing approach for estimating directions-of-arrival of wideband signals,” in proc. of 2009 Conference on Signals, Systems and Computer,pp. 1663-1667.
[13] H. Wang, M. Kaveh, “Coherent signal-subspace processing for the detection and estimation of angles of arrival of multiple wideband sources,” IEEE Transactions on Acoustics, Speech and Signal Processing, vol. 33, no. 4, pp. 823-831, 1985.
[14] S. Valaee, P. Kabal, “Wideband array processing using a twosided correlation transformation,” IEEE Transactions on Signal Processing, vol. 43, no. 1, pp. 160-172, 1995.
[15] H. Hung, M. Kaveh, “Focusing matrices for coherent signalsubspace processing,” IEEE Transactions on Acoustics, Speech and Signal Processing, vol. 36, no. 8, pp.1272-1281, 1988.
[16] Q. Zhang, Y. Yin, and J. Huang, “Detecting the number of sources using modified EGM,” in IEEE Region 10 Conference (TENCON2006), pp. 1-4.
[17] F. Chu, J. Huang, M.Jiang, Q. Zhang, and T. Ma, “Detecting the number of sources using modified EIT,” in proc. of the 2009 IEEE Conference on Industrial Electronics and Applications (ICIEA), pp. 563-566.


Journal of Electrical and Computer Engineering Innovations (JECEI) welcomes letters to the editor for the post-publication discussions and corrections which allows debate post publication on its site, through the Letters to Editor. Letters pertaining to manuscript published in JECEI should be sent to the editorial office of JECEI within three months of either online publication or before printed publication, except for critiques of original research. Following points are to be considering before sending the letters (comments) to the editor.

[1] Letters that include statements of statistics, facts, research, or theories should include appropriate references, although more than three are discouraged.

[2] Letters that are personal attacks on an author rather than thoughtful criticism of the author’s ideas will not be considered for publication.

[3] Letters can be no more than 300 words in length.

[4] Letter writers should include a statement at the beginning of the letter stating that it is being submitted either for publication or not.

[5] Anonymous letters will not be considered.

[6] Letter writers must include their city and state of residence or work.

[7] Letters will be edited for clarity and length.