Grating lobe mitigation based on extended coherence factor in sparse MIMO UWB array

Author

Jun Hu ; Guofu Zhu ; Tian Jin ; Biying Lu ; Zhimin Zhou

Author_Institution

Coll. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China

fYear

2014

fDate

19-23 Oct. 2014

Firstpage

2098

Lastpage

2101

Abstract

Many multiple-input-multiple-output (MIMO) ultra-wideband (UWB) array systems are restricted to a limited array with limited antenna elements and thus suffer from the azimuth grating lobes. To combat the azimuth grating lobes, in this paper, firstly a simple analysis about the grating lobes in the sparse MIMO UWB array is performed. Then, an extended coherence factor (ECF) method taking advantage of the frequency point flexibility of the stepped frequency continuous wave (SFCW) signals is proposed. Finally, numerical simulations are carried out and validate the proposed method.

Keywords

MIMO communication; coherence; ultra wideband antennas; ECF method; MIMO UWB array systems; SFCW signals; azimuth grating lobes; extended coherence factor method; frequency point flexibility; grating lobe mitigation; limited antenna elements; multiple-input-multiple-output ultrawideband array systems; sparse MIMO UWB array; stepped frequency continuous wave signals; Arrays; Coherence; Gratings; Imaging; MIMO; Niobium; Radar imaging; coherence factor (CF); grating lobe; multiple-input-multiple-output (MIMO); sparse array; ultra-wideband (UWB);

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing (ICSP), 2014 12th International Conference on

Conference_Location

Hangzhou

ISSN

2164-5221

Print_ISBN

978-1-4799-2188-1

Type

conf

DOI

10.1109/ICOSP.2014.7015364

Filename

7015364