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On Spherical Linear Interpolation for MIMO-OFDM Beamforming Systems
Joontae KIM Dong-Jo PARK
IEICE TRANSACTIONS on Communications
Publication Date: 2011/05/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
spherical linear interpolation, beamforming, MIMO-OFDM,
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We analyze linear channel estimation for MIMO-OFDM systems and propose a spherical linear interpolator in closed-form for the beamforming codewords. We also suggest a hybrid interpolator using a simplified version of the derived interpolator. Simulation results show that the proposed schemes are efficient and competitive with respect to the feedback overhead and have low complexity.