Generalized Nested Array: Optimization for Degrees of Freedom and Mutual Coupling

In this letter, we propose a generalized nested array (GNA) with two flexible co-prime factors for enlarging the inter-element spacing of two concatenated uniform linear subarrays. It is shown that both the prototype nested array and generalized co-prime array can be interpreted as special cases. Th...

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Published inIEEE communications letters Vol. 22; no. 6; pp. 1208 - 1211
Main Authors Shi, Junpeng, Hu, Guoping, Zhang, Xiaofei, Zhou, Hao
Format Journal Article
LanguageEnglish
Published IEEE 01.06.2018
Subjects
Array signal processing
degrees of freedom
Direction of arrival estimation
flexible co-prime factors
generalized nested array
Linear antenna arrays
Mutual coupling
Optimization
Prototypes
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Abstract In this letter, we propose a generalized nested array (GNA) with two flexible co-prime factors for enlarging the inter-element spacing of two concatenated uniform linear subarrays. It is shown that both the prototype nested array and generalized co-prime array can be interpreted as special cases. The closed-form expressions for the range of consecutive lags and the number of unique lags are derived for any given factors. After optimization, GNA has the same number of degrees of freedom as (super) nested array but with reduced mutual coupling. Numerical simulations prove the superiority of proposed configuration using compressed sensing algorithm.
AbstractList In this letter, we propose a generalized nested array (GNA) with two flexible co-prime factors for enlarging the inter-element spacing of two concatenated uniform linear subarrays. It is shown that both the prototype nested array and generalized co-prime array can be interpreted as special cases. The closed-form expressions for the range of consecutive lags and the number of unique lags are derived for any given factors. After optimization, GNA has the same number of degrees of freedom as (super) nested array but with reduced mutual coupling. Numerical simulations prove the superiority of proposed configuration using compressed sensing algorithm.
Author Zhou, Hao
Zhang, Xiaofei
Shi, Junpeng
Hu, Guoping
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Snippet In this letter, we propose a generalized nested array (GNA) with two flexible co-prime factors for enlarging the inter-element spacing of two concatenated...
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SubjectTerms Array signal processing
degrees of freedom
Direction of arrival estimation
flexible co-prime factors
generalized nested array
Linear antenna arrays
Mutual coupling
Optimization
Prototypes
Title Generalized Nested Array: Optimization for Degrees of Freedom and Mutual Coupling
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Volume 22
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