Back to results
US 8,265,700 B2Granted
Transmitting and receiving method, and radio apparatus utilizing the same
AssigneeHera Wireless S.A.
InventorSeigo Nakao
Life of this patent
Estimating the term…
Abstract
A processing unit transmits, from at least one of a plurality of antennas, data corresponding respectively to the plurality of antennas. A control unit generates request signals with which to let a second radio apparatus supply information on rates at the second radio apparatus. When transmitting the request signal, the processing unit also transmits, from a plurality of antennas which includes antennas other than the antennas that transmit the data, known signals corresponding respectively to the plurality of antennas.
Claims10
A radio apparatus, comprising:
- a generating unit configured for generating a burst signal that comprises:
- (1) STS(s) (Short Training Sequence(s)) for AGC (Automatic Gain Control), operative in a MIMO system assigned to N of M streams, where N and M are integers, N is less than M, and N is equal to or greater than 1,
- (2) LTSs (Long Training Sequences) for channel estimation, operative in the MIMO system assigned to the respective M streams, and
- (3) data assigned to the N of M streams, each of the N of M streams including the STS, the LTS, and the data in that order in a time sequence;
- and
- a plurality of antennas configured for transmitting the burst signal generated by the generating unit,
- wherein transmitting timing of the LTS assigned to the N of M streams is different from that of another LTS which is not assigned to the N of M streams.
4 more elements
A radio apparatus, comprising:
- a generating unit configured for generating a burst signal that comprises:
- (1) STS(s) (Short Training Sequence(s)) for AGC (Automatic Gain Control), operative in a MIMO system assigned to N of M streams, where N and M are integers, N is less than M, and N is equal to or greater than 1,
- (2) LTSs (Long Training Sequences) for channel estimation, operative in the MIMO system assigned to the respective M streams, and
- (3) data assigned to the N of M streams, each of the N of M streams including the STS, the LTS, and the data in that order in a time sequence;
- a power amplifier configured for amplifying the burst signal generated by the generating unit;
- and
- a plurality of antennas configured for transmitting the burst signal amplified by the power amplifier,
- wherein transmitting timing of the LTS assigned to the N of M streams is different from that of another LTS which is not assigned to the N of M streams.
5 more elements
A radio apparatus, comprising:
- a generating unit configured for generating a digital burst signal that comprises:
- (1) STS(s) (Short Training Sequence(s)) for AGC (Automatic Gain Control), operative in a MIMO system assigned to N of M streams, where N and M are integers, N is less than M, and N is equal to or greater than 1,
- (2) LTSs (Long Training Sequences) for channel estimation, operative in the MIMO system assigned to the respective M streams, and
- (3) data assigned to the N of M streams, each of the N of M streams including the STS, the LTS, and the data in that order in a time sequence;
- a D-A conversion unit configured for converting the digital burst signal generated by the generating unit into an analog burst signal;
- a power amplifier configured for amplifying the analog burst signal converted by the D-A conversion unit;
- and
- a plurality of antennas configured for transmitting the analog burst signal amplified by the power amplifier,
- wherein transmitting timing of the LTS assigned to the N of M streams is different from that of another LTS which is not assigned to the N of M streams.
6 more elements
A radio apparatus, comprising:
- a generating unit configured for generating a burst signal that comprises:
- (1) STS(s) (Short Training Sequence(s)) for AGC (Automatic Gain Control), operative in a MIMO system assigned to N of M streams, where N and M are integers, N is less than M, and N is equal to or greater than 1,
- (2) LTSs (Long Training Sequences) for channel estimation, operative in the MIMO system assigned to the respective M streams, and
- (3) data assigned to the N of M streams, each of the N of M streams including the STS, the LTS, and the data in that order in a time sequence;
- and
- a power amplifier configured for amplifying the burst signal generated by the generating unit,
- wherein transmitting timing of the LTS assigned to the N of M streams is different from that of another LTS which is not assigned to the N of M streams.
4 more elements
A radio apparatus, comprising:
- a generating unit configured for generating a digital burst signal that comprises:
- (1) STS(s) (Short Training Sequence(s)) for AGC (Automatic Gain Control), operative in a MIMO system assigned to N of M streams, where N and M are integers, N is less than M, and N is equal to or greater than 1,
- (2) LTSs (Long Training Sequences) for channel estimation, operative in the MIMO system assigned to the respective M streams, and
- (3) data assigned to the N of M streams, each of the N of M streams including the STS, the LTS, and the data in that order in a time sequence;
- a D-A conversion unit configured for converting the digital burst signal generated by the generating unit into an analog burst signal;
- and
- a power amplifier configured for amplifying the analog burst signal converted by the D-A conversion unit,
- wherein transmitting timing of the LTS assigned to the N of M streams is different from that of another LTS which is not assigned to the N of M streams.
5 more elements
Dependencies are inferred from the claim text.