Deterioration of Receive Weight Interpolation and Its Mitigation Technique in MIMO SC-FDE

Kensei SAITO  Yasutaka OGAWA  Toshihiko NISHIMURA  Takeo OHGANE  

B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)   Vol.J101-B   No.7   pp.570-573
Publication Date: 2018/07/01
Online ISSN: 1881-0209
Type of Manuscript: Special Section LETTER (Special Section for Encouraging Young Researchers)
MIMO System,  SC-FDE,  MMSE,  interpolation,  

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If we calculate accurate MMSE weights for a part of frequency points and interpolate them for the remaining ones in MIMO SC-FDE, we can reduce the calculations. The interpolation accuracy, however, degrades when SNR is very high. In this paper, we clarify the reason and propose its mitigation technique.