Partial FFT demodulation is a newly-emerging technique to mitigate the inter-carrier interference (ICI) of orthogonal frequency division multiplexing (OFDM) systems over time-varying underwater acoustic channels. In this letter, we extend the partial FFT demodulation method for a single-input single-output (SISO) configuration to the multiple-input multiple-output (MIMO) case. By assuming no channel knowledge, we design an adaptive algorithm which performs sliding-window channel estimation, partial FFT combining and data detection across subcarriers iteratively. Furthermore, a new parameter "residual ICI span" is introduced to counteract the post-combining ICI and provide a better system performance.
机构:
Harbin Inst Technol, Commun Res Ctr, Harbin 150001, Heilongjiang, Peoples R ChinaHarbin Inst Technol, Commun Res Ctr, Harbin 150001, Heilongjiang, Peoples R China
Li, Yong
Sha, Xuejun
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Harbin Inst Technol, Commun Res Ctr, Harbin 150001, Heilongjiang, Peoples R ChinaHarbin Inst Technol, Commun Res Ctr, Harbin 150001, Heilongjiang, Peoples R China
Sha, Xuejun
Wang, Kun
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Harbin Inst Technol, Commun Res Ctr, Harbin 150001, Heilongjiang, Peoples R ChinaHarbin Inst Technol, Commun Res Ctr, Harbin 150001, Heilongjiang, Peoples R China
机构:
Harbin Inst Technol, Commun Res Ctr, Harbin 150001, Heilongjiang, Peoples R ChinaHarbin Inst Technol, Commun Res Ctr, Harbin 150001, Heilongjiang, Peoples R China
Li, Yong
Sha, Xuejun
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机构:
Harbin Inst Technol, Commun Res Ctr, Harbin 150001, Heilongjiang, Peoples R ChinaHarbin Inst Technol, Commun Res Ctr, Harbin 150001, Heilongjiang, Peoples R China
Sha, Xuejun
Wang, Kun
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h-index: 0
机构:
Harbin Inst Technol, Commun Res Ctr, Harbin 150001, Heilongjiang, Peoples R ChinaHarbin Inst Technol, Commun Res Ctr, Harbin 150001, Heilongjiang, Peoples R China