US 2026/0230122 A1Published application

Method of determining a process for generating precoding and combining parameters for rate splitting multiple access in a mu-mimo communication system, and transmitter and receiver implementing the method

AssigneeContinental Automotive Technologies GmbH

InventorsDavid Gonzalez Gonzalez, Osvaldo Gonsa, Kengo Ando, Giuseppe Thadeu Freitas de Abreu, Hyeon Seok Rou

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Abstract

A method of determining a process for generating precoding and combining parameters in a MU-MIMO RSMA communication system is presented. The determining process uses a selectable targeted property of the communication connections, a selectable process for processing respective errors associated with estimated channel coefficient matrices of all communication channels, and a selectable design technique as inputs. Further, a method of generating precoding and combining parameters for wireless interfaces of a first and a second communication device, respectively, in accordance with the previously determined process is presented. The generating process provides joint determination of precoding and combining parameters in MU-MIMO RSMA communication systems in which the CSI is only imperfectly known. Yet further, methods for operating first and second wireless communication devices in a MU-MIMO RSMA communication system using the precoding and combining parameters determined in accordance with the process are presented.

Claims20

Dependent claims

A method of determining a process for generating precoding and combining parameters for wireless interfaces of a first and a second communication device, respectively, the first wireless communication device being configured for wireless communication with a plurality of second communication devices in a MU-MIMO RSMA communication system, the method comprising, for all communication channels with all of the plurality of second communication devices:

receiving a selection input for selecting a targeted property of the communication connections, a process for processing respective errors associated with estimated channel coefficient matrices of all communication channels, and a design technique, respectively,
selecting one from a plurality of sets of target properties for the communication connections in accordance with the selection input,
selecting one from a plurality of processes for processing the respective errors associated with the estimated channel coefficient matrices in accordance with the selection input,
selecting one of a plurality of design techniques for determining the precoding and/or combining parameters in accordance with the selection input, and
implementing and configuring a process for generating the precoding and/or combining parameters in accordance with the selected targeted properties of the communication connections, the selected error-processing, and the selected design technique, the process for generating being configured to use at least the estimated channel coefficient matrices and the output from the error-processing as inputs.

2 more elements

A method of operating a second wireless communication device wirelessly connected to a first wireless communication device in a MU-MIMO RSMA communication system, the method comprising:

receiving at least precoding and combining parameters from the first communication device,
receiving a signal from the first communication device, the signal comprising a common signal part and a private signal part and being precoded in accordance with the same precoding and combining parameters previously received from the first communication device,
combining the respective common and private signal parts received at the plurality of antennas using the previously received precoding and combining parameters that were used for precoding, for obtaining combined common signal parts and combined private signal parts,
providing the combined common signal parts and combined private signal parts to a detector, for estimating the transmitted common and private signal parts, respectively, and
providing the estimated signals at an output.

2 more elements

Dependencies are inferred from the claim text.