Open AccessHigh‐resolution DOA estimation for cooperation networks using space‐time hopping
Author(s) -
Li Xiangyu,
Guo Suxia,
Jin Liang,
Huang Kaizhi,
Xia Lu
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2015.4194
Subject(s) - algorithm , direction of arrival , frequency hopping spread spectrum , computer science , signal (programming language) , time hopping , symbol (formal) , space (punctuation) , mathematics , telecommunications , antenna (radio) , pulse amplitude modulation , detector , pulse (music) , programming language , operating system
Since the traditional direction‐of‐arrival (DOA) estimation algorithm is passive and non‐cooperation, its performance degrades with respect to the large number of terminals and closely spaced sources in multi‐nodes networks. A cooperated space‐time hopping algorithm to estimate the DOA of all users simultaneously is presented. The signal will be adjusted by the pre‐assigned hopping weights during each symbol time. The change of the weights is equivalent to the change of array manifolds, thus enriching differences between uses’ channels. This algorithm is able to estimate more number of signals and separate some closely spaced sources. Simulations demonstrate the effectiveness of the algorithm.