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This paper presents a multiple-input–multiple-output (MIMO) precoder with a compensated QR decomposition (CQRD) combination for coordinated multipoint (CoMP) downlink transmission. Unlike conventional QR decomposition (QRD) combination, CQRD combination adopts compensated channel matrix orderings. This paper first proposes CQRD combination for CoMP scenarios. The statistics for combined spatial subchannel...
In recent years, the research on multiple-input multiple-output (MIMO) wireless communications has attracted much interest. This study investigates precoding techniques for multi-user MIMO communications. By applying QR decomposition to augmented channel matrix based on minimum mean squared error (MMSE) approach plus Tomlinson-Harashima precoding (THP) and equal-rate power allocation, we show that...
In traditional fast Ethernet systems, such as 1000BASE-T, far-end crosstalk (FEXT) interferences are treated as noises, and can usually be tolerated. In 10GBASE-T system, the FEXT must be canceled by at least about 20dB in order to achieve the required decision point signal-to-noise ratio (DP-SNR) of 23.4dB. This paper not only proposes a power limited transmitter-side-based FEXT cancellation method,...
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