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The use of pre coding for different signals overlaid on transmission of superposition of multiple users to link descendant
The use of pre coding for different signals overlaid on transmission of superposition of multiple users to link descendant
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机译:将预编码用于覆盖多个用户的链接叠加后代的传输的不同信号
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摘要
A method of performing downlink multiuser superposition transmission (MUST) when different precoders are applied to superposed signals is proposed. For demodulation reference signal (DM-RS) transmission mode, the near-user can estimate the far-user's channel by means of separate DM-RS symbols. For common reference signal (CRS) transmission mode, the near-user can blindly detect code far-user's precoder that is not signaled to the near-user. As a result, even the downlink control information (DCI) format is designed for the situation using the same precoder for superposed signals, the MUST scheme works and the near-user receiver can separate the superposed signal for the far-user.
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