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Conjugate ESPRIT (C-SPRIT)

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2 Author(s)
Tayem, N. ; Dept. of Electr. & Comput. Eng., Wichita State Univ., KS, USA ; Kwon, H.M.

In this paper, we present an algorithm to estimate the direction of the arrival angles (DOAs) from noncoherent one-dimensional (1-D) signal sources such as binary phase shift keying (BPSK) and M-ary amplitude shift keying (MASK). The proposed algorithm can provide a more precise DOA estimation and can detect more signals than well-known classical subspace-methods MUSIC and ESPRIT for the 1-D signals. The complexity is the same as that of ESPRIT since the proposed algorithm uses the same array geometry and subarray processing that ESPRIT does. The main differences between the proposed algorithm and the ESPRIT algorithm are as follows: 1) the number of overlapping array elements between two subarrays is equal to M in the proposed algorithm, while in ESPRIT the maximum number of overlapping elements is M-1, where M denotes the total number of array elements, and 2) the proposed algorithm employs the conjugate of rotation matrix (CRM) Φ* while ESPRIT uses Φ with no conjugate for the second subarray geometry.

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:52 ,  Issue: 10 )