On Spherical Linear Interpolation for MIMO-OFDM Beamforming Systems

Joontae KIM  Dong-Jo PARK  

IEICE TRANSACTIONS on Communications   Vol.E94-B   No.5   pp.1487-1490
Publication Date: 2011/05/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.1487
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.