JP2013042350A5

JP2013042350A5 -

Info

Publication number: JP2013042350A5
Application number: JP2011177718A
Authority: JP
Filing date: 2011-08-15
Publication date: 2014-09-04
Anticipated expiration: 2031-08-15

Claims

A wireless transmission device comprising a plurality of transmission antennas and transmitting spatially multiplexed signals to a plurality of wireless reception devices,
A selection unit for selecting any one group from a plurality of groups representing a combination of a plurality of wireless reception devices ;
A precoding unit that performs precoding on transmission data addressed to each wireless reception device belonging to the selected group in a precoding scheme determined in advance for the selected group, Wireless transmission device.

A wireless transmission device comprising a plurality of transmission antennas and transmitting spatially multiplexed signals to a plurality of wireless reception devices,
A selection unit for selecting any one group from a plurality of groups representing a combination of a plurality of wireless reception devices;
A precoding unit that performs precoding with respect to transmission data addressed to each wireless reception device belonging to the selected group in a precoding scheme predetermined for each wireless reception device corresponding to the selected group; A wireless transmission device comprising:

A configuration information generating unit that generates group configuration information for each of the plurality of groups;
An identification information generating unit that generates group identification information of the selected group,
Prior to transmission of the precoded signal, the group configuration information is transmitted to the plurality of wireless reception devices in advance, and the group identification information together with the precoded signal is transmitted to each of the wireless reception devices belonging to the selected group. The wireless transmission device according to claim 1, wherein the wireless transmission device transmits to the wireless communication device.

The plurality of groups includes a plurality of wireless reception devices of the same combination and a plurality of groups having different orders in the group of the plurality of wireless reception devices to which the plurality of groups belong. The wireless transmission device according to claim 3.

Before Symbol precoding scheme, a radio transmission device according to any one of claims 1 to 4, characterized in that one of a linear pre-coding or non-linear precoding.

A wireless reception device that receives a spatially multiplexed signal from a wireless transmission device including a plurality of transmission antennas,
  A receiving unit that receives group configuration information and group identification information of a group to which a wireless reception device that is a transmission destination of the spatially multiplexed signal belongs;
  A determination unit that determines whether or not the own device belongs to the group based on the group configuration information and the group identification information;
  As a result of the determination, when the own device belongs to the group indicated by the group identification information, a reception process corresponding to a precoding scheme determined in advance for the group indicated by the group identification information is performed on the signal addressed to the own device. A reception processing unit;
A radio receiving apparatus comprising:

A wireless reception device that receives a spatially multiplexed signal from a wireless transmission device including a plurality of transmission antennas,
A receiving unit that receives group configuration information and group identification information of a group to which a wireless reception device that is a transmission destination of the spatially multiplexed signal belongs;
A determination unit that determines whether or not the own device belongs to the group based on the group configuration information and the group identification information;
A result of the determination, if it belongs to the group indicated own apparatus of said group identification information, the signal addressed to the device itself, the precoding method previously determined for correspondingly own device to the group indicated by the group identification information And a reception processing unit that performs a corresponding reception process.

The precoding scheme is either linear precoding or non-linear precoding,
The radio reception apparatus according to claim 6 or 7, wherein the reception processing unit performs a modulo operation on a received data symbol when the precoding scheme is nonlinear precoding.

An integrated circuit that allows a plurality of functions to be exhibited by the wireless transmission device by being mounted on a wireless transmission device including a plurality of transmission antennas ,
A function of transmitting spatially multiplexed signals to a plurality of wireless reception devices;
A function of selecting any one group from a plurality of groups representing a combination of a plurality of wireless reception devices;
A function of performing precoding with respect to transmission data addressed to each wireless reception device belonging to the selected group by a precoding scheme determined in advance for the selected group, the wireless An integrated circuit characterized by being exhibited by a transmission device.

An integrated circuit that, when mounted on a wireless receiver, causes the wireless receiver to perform a plurality of functions,
  A function of receiving a spatially multiplexed signal from a wireless transmission device having a plurality of transmission antennas;
  A function of receiving group configuration information and group identification information of a group to which a wireless reception device as a transmission destination of the spatially multiplexed signal belongs;
  A function of determining whether the own device belongs to the group based on the group configuration information and the group identification information;
  If the result of the determination is that the device belongs to a group indicated by the group identification information, a function for receiving a signal addressed to the device corresponding to a precoding scheme determined in advance for the group indicated by the group identification information; An integrated circuit characterized by causing the wireless receiver to exhibit a series of functions.