Transmission Device That Performs Multi-User MIMO Transmission for Performing Spatial Multiplexing and Transmitting of a Plurality of Packets Addressed to a Plurality of Reception Devices United States Patent 9979516 |
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| Author:
| Onodera, Takashi |
| ISBN: | 979-8-5763-5761-1 |
| Publication Date: | Dec 2020 |
| Publisher: | Independently Published
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| Book Format: | Paperback |
| List Price: | USD $12.99 |
Book Description:
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It is intended to provide a transmission device, a reception device and a communication system capable of improving transmission characteristics by performing packet combining by HARQ in MU-MIMO transmission using non-linear precoding. In a case of receiving NAK from any of terminal devices (400), a base station device (100) retransmits a packet, in which an error occurs, addressed to this terminal device. The base station device (100) transmits the data to be retransmitted together...
More DescriptionIt is intended to provide a transmission device, a reception device and a communication system capable of improving transmission characteristics by performing packet combining by HARQ in MU-MIMO transmission using non-linear precoding. In a case of receiving NAK from any of terminal devices (400), a base station device (100) retransmits a packet, in which an error occurs, addressed to this terminal device. The base station device (100) transmits the data to be retransmitted together with other transmission data addressed to a different terminal device or addressed to the own terminal device by spatial multiplexing transmission with MU-MIMO. At this time, for the retransmission data, precoding is performed such that a perturbation term same as a perturbation term which has been added to this data by non-linear precoding at the time of initial transmission is added.