@inproceedings{8be6ebcf06ca492c83e615431ccbd5be,
title = "Extended cantor arrays with hole-free fourth-order difference co-arrays",
abstract = "We present extended Cantor arrays based on fourth-order difference co-arrays (E-FO-Cantor). These arrays result from extending the recently proposed fractal arrays to fourth-order difference co-arrays, and lead to fourth-order difference co-arrays that are hole-free. The set of sensor positions of the E-FO-Cantor is expressed in a simple and recursive form. The proposed Cantor arrays lead to O(N2 log2 3) ≈ O(N3.17) degrees of freedom compared to O(N2) that can be achieved by existing sparse arrays with the hole-free property. Compared with other sparse arrays with the hole-free property in their fourth-order co-arrays, the proposed Cantor arrays provide a longer uniform linear array with more virtual sensors, leading to better DOA estimation performance.",
keywords = "Cantor arrays, Difference co-array, Direction of arrival estimation, Fourth-order cumulants, Sparse array design",
author = "Zixiang Yang and Qing Shen and Wei Liu and Eldar, {Yonina C.} and Wei Cui",
note = "Publisher Copyright: {\textcopyright} 2021 IEEE; 53rd IEEE International Symposium on Circuits and Systems, ISCAS 2021 ; Conference date: 22-05-2021 Through 28-05-2021",
year = "2021",
doi = "10.1109/ISCAS51556.2021.9401739",
language = "English",
series = "Proceedings - IEEE International Symposium on Circuits and Systems",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2021 IEEE International Symposium on Circuits and Systems, ISCAS 2021 - Proceedings",
address = "United States",
}