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- W2000256734 abstract "We consider the robust linear precoding (LP) and Tomlinson-Harashima precoding (THP) schemes for multiuser MIMO-OFDM downlink channels with limited feedback. Benefiting from the correlation of spatial channels, the mobile terminal compresses and feeds back the time-domain channel vectors instead of the corresponding frequency-domain vectors to substantially reduce the feedback signalling overhead. A compression and restoration method and a codebook design for channel state information at the transmitter (CSIT) feedback are proposed in the time domain. By treating the partial CSIT as a random quantity, we develop the robust precoders to combat the truncation and quantization errors introduced in the feedback procedure. In comparison with the non-robust designs, both the robust LP and THP have better bit-error rate performance especially in high signal-to-noise ratio region." @default.
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- W2000256734 date "2010-04-01" @default.
- W2000256734 modified "2023-10-07" @default.
- W2000256734 title "Robust Downlink Precoding in Multiuser MIMO-OFDM Systems with Time-Domain Quantized Feedback" @default.
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- W2000256734 doi "https://doi.org/10.1109/wcnc.2010.5506364" @default.
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