Title :
Mobile reception of broadband signal with joint operation of blind and LMS adaptive beamforming
Author :
Ahn, Jang-Hwan ; Lim, Chae-Hyun ; Han, Dong-Seog ; Oh, Hae-Sock ; Kim, Seung-Won
Author_Institution :
Sch. of Electron. & Electr. Eng., Kyungpook Nat. Univ., Taegu, South Korea
Abstract :
A beamforming technique is proposed to guarantee a feasible reception performance in mobile communications. The proposed algorithm called CLMS is jointly operating a Capon and a least mean square (LMS) adaptive beamforming techniques. The CLMS algorithm works as the Capon and the LMS beamformers for unknown and known data periods, respectively. The CLMS algorithm is evaluated in a mobile reception channel of the geometrically based single bounce circular model (GBSBCM). Compensation abilities over multipaths and a phase distortion are analyzed and compared for the proposed, Capon, LMS beamforming algorithms. A decision feedback equalizer (DFE) is also considered to mitigate remaining multipaths by concatenating the beamformer.
Keywords :
4G mobile communication; array signal processing; decision feedback equalisers; least mean squares methods; multipath channels; radio reception; CLMS; Capon beamformer; DFE; GBSBCM; LMS adaptive beamforming; beamformer concatenation; blind adaptive beamforming; broadband signal; decision feedback equalizer; geometrically based single bounce circular model; least mean square; mobile communications; mobile reception; multipaths; phase distortion; reception performance; Adaptive arrays; Algorithm design and analysis; Array signal processing; Decision feedback equalizers; Digital TV; Digital communication; Directive antennas; Least squares approximation; Phase distortion; Solid modeling;
Conference_Titel :
Military Communications Conference, 2004. MILCOM 2004. 2004 IEEE
Print_ISBN :
0-7803-8847-X
DOI :
10.1109/MILCOM.2004.1494963
