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- W2105758469 abstract "Abstract. In this paper a decision-directed Multiple-Input Multiple-Output (MIMO) channel tracking algorithm is enhanced to raise the channel estimate accuracy. While DDCE is prone to error propagation the enhancement employs channel decoding in the tracking process. Therefore, a quantized block of symbols is checked on consistency via the channel decoder, possibly corrected and then used. This yields a more robust tracking of the channel in terms of bit error rate and improves the channel estimate under certain conditions. Equalization is performed to prove the feasibility of the obtained channel estimate. Therefore a combined signal consisting of data and pilot symbols is sent. Adaptive filters are applied to exploit correlations in time, frequency and spatial domain. By using good error-correcting coding schemes like Turbo Codes or Low Density Parity Check (LDPC) codes, adequate channel estimates can be acquired even at low signal to noise ratios (SNR). The proposed algorithm among two others is applied for channel estimation and equalization and results are compared." @default.
- W2105758469 created "2016-06-24" @default.
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- W2105758469 date "2009-05-18" @default.
- W2105758469 modified "2023-09-30" @default.
- W2105758469 title "Improving MIMO-OFDM decision-directed channel estimation by utilizing error-correcting codes" @default.
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- W2105758469 doi "https://doi.org/10.5194/ars-7-83-2009" @default.
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