Radio communication apparatus, transmitter apparatus, receiver apparatus and radio communication system
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsAkinori Taira, Fumio Ishizu
Life of this patent
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Abstract
A radio communication apparatus at a transmission side that includes a plurality of transmission antennas and performs a communication using at least one carrier. The radio communication apparatus includes a channel dividing unit configured to divide a transmission signal into a plurality of channels based on channel structure information returned from another radio communication apparatus at a reception side and indicating a structure of a space-division-multiplexing-channel and a space-time-coding channel between transmission and reception antennas, and a space-time-coding unit configured to realize transmission diversity by performing a space-time-coding processing for each of the plurality of channels.
Claims24
A radio communication apparatus at a transmission side that includes a plurality of transmission antennas and performs a communication using at least one carrier, the radio communication apparatus comprising:
- a channel dividing unit configured to divide a transmission signal into a plurality of channels based on channel structure information returned from another radio communication apparatus at a reception side and indicating a structure of a space-division-multiplexing channel and a space-time-coding channel between transmission and reception antennas;
- and
- a space-time-coding unit configured to realize transmission diversity by performing a space-time-coding processing for each of the plurality of channels.
A radio communication apparatus at a reception side that includes at least one reception antenna and performs a communication using at least one carrier, the radio communication apparatus comprising:
- a channel estimating unit configured to estimate a channel gain between a transmission side and the reception side;
- and
- a channel-structure determining unit configured to determine a structure of a multiple-input-multiple-output channel based on a result of the estimation of the channel gain, a physical configuration of an other radio communication apparatus at the transmission side, and a physical configuration of the radio communication apparatus and to return channel structure information indicating a structure of a space-division-multiplexing channel and a space-time-coding channel between transmission and reception antennas that is a result of the determination to the other radio communication apparatus at the transmission side.
A radio communication apparatus that includes a plurality of transmission antennas and at least one reception antenna, and performs a communication using at least one carrier, the radio communication apparatus comprising:
- a transmission-processing unit including:
- a channel dividing unit configured to divide a transmission signal into a plurality of channels based on channel structure information returned from a first radio communication apparatus at a reception side and indicating a structure of a space-division-multiplexing channel and a space-time-coding channel between transmission and reception antennas, and
- a space-time-coding unit configured to realize transmission diversity by performing a space-time-coding processing for each of the plurality of channels;
- and
- a reception-processing unit including:
- a channel estimating unit configured to estimate a channel gain between a transmission side and a reception side, and
- a channel-structure determining unit configured to determine a structure of a multiple-input-multiple-output channel based on a result of the estimation of the channel gain, a physical configuration of a second radio communication apparatus at the transmission side, and a physical configuration of the first radio communication apparatus at the reception side, and to return channel structure information that is a result of the determination to the second radio communication apparatus at the transmission side.
A transmitter that includes a plurality of transmission antennas and transmits a transmission signal to a receiver using at least one carrier, the transmitter comprising:
- a channel dividing unit configured to divide a transmission signal into a plurality of channels based on channel structure information returned from the receiver and indicating a structure of a space-division-multiplexing channel and a space-time-coding channel between transmission and reception antennas;
- and
- a space-time-coding unit configured to realize transmission diversity by performing a space-time-coding processing for each of the plurality of channels.
A receiver that includes at least one reception antenna and receives a signal from a transmitter using at least one carrier, the receiver comprising:
- a channel estimating unit configured to estimate a channel gain between a transmission side and a reception side;
- and
- a channel-structure determining unit configured to determine a structure of a multiple-input-multiple-output channel based on a result of the estimation of the channel gain, a physical configuration of the transmitter, and a physical configuration of the receiver, and to return channel structure information indicating a structure of a space-division-multiplexing channel and a space-time-coding channel between transmission and reception antennas that is a result of the determination to the transmitter.
A radio communication system comprising:
- a transmitter configured to transmit a transmission signal to a receiver using at least one carrier, the transmitter including:
- a plurality of transmission antennas,
- a channel dividing unit configured to divide a transmission signal into a plurality of channels based on channel structure information returned from the receiver and indicating a structure of a space-division-multiplexing channel and a space-time-coding channel between transmission and reception antennas, and
- a space-time-coding unit configured to realize transmission diversity by performing a space-time-coding processing for each of the plurality of channels;
- and
- a receiver configured to receive the transmission signal from the transmitter using at least one carrier, including
- at least one reception antenna,
- a channel estimating unit configured to estimate a channel gain between a transmission side and a reception side, and
- a channel-structure determining unit configured to determine a structure of a multiple-input-multiple-output channel based on a result of the estimation of the channel gain, a physical configuration of the transmitter, and a physical configuration of the receiver, and to return channel structure information that is a result of the determination to the transmitter.
Dependencies are inferred from the claim text.