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US 2002/0160814 A1Published application
Radio Base Station Apparatus and Radio Communication Method
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorKazuyuki Miya
Life of this patent
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Abstract
Focused on group directivity reception with respect to a combination between an adaptive array antenna technology and an interference canceller, the present invention is intended to improve the reception characteristic and improve the system capacity by generating a reference signal from the signal after interference elimination, using a difference between the reference signal and the signal after adaptive array antenna reception as an error signal and carrying out group directivity control.
Claims9
A radio base station apparatus comprising:
- adaptive array antenna receiving means for carrying out adaptive array antenna reception processing on a signal from a communication terminal apparatus;
- an interference canceller that carries out interference cancellation processing on the signal subjected to said adaptive array antenna reception processing;
- reference signal generating means for generating a reference signal of the signal from said communication terminal apparatus from the demodulated data after being subjected to said interference cancellation processing;
- and
- weight controlling means for controlling reception weights used for adaptive array antenna reception processing using a difference between the signal subjected to said adaptive array antenna reception processing and said reference signal.
2 more elements
A radio base station apparatus comprising:
- adaptive array antenna receiving means for carrying out adaptive array antenna reception processing on a signal from a communication terminal apparatus;
- an interference canceller that carries out interference cancellation processing on the signal subjected to the adaptive array antenna reception processing;
- error correction processing means for carrying out error correction processing on the demodulated data after being subjected to said interference cancellation processing;
- reference signal generating means for generating a reference signal in symbol units of the signal from said communication terminal apparatus from the demodulated data after said error correction processing;
- and
- weight controlling means for controlling reception weights used for adaptive array antenna reception processing using a difference between the signal subjected to said interference cancellation processing and said reference signal.
3 more elements
A communication terminal apparatus carrying out a radio communication with a radio base station apparatus, said radio base station apparatus comprising:
- adaptive array antenna receiving means for carrying out adaptive array antenna reception processing on a signal from the communication terminal apparatus;
- an interference canceller that carries out interference cancellation processing on the signal subjected to said adaptive array antenna reception processing;
- reference signal generating means for generating a reference signal of the signal from said communication terminal apparatus from the demodulated data after being subjected to said interference cancellation processing;
- and
- weight controlling means for controlling reception weights used for adaptive array antenna reception processing using a difference between the signal subjected to said adaptive array antenna reception processing and said reference signal.
2 more elements
A radio communication method comprising:
- an adaptive array antenna receiving step of carrying out adaptive array antenna reception processing on a signal from a communication terminal apparatus;
- an interference canceling step of carrying out interference cancellation processing on the signal subjected to said adaptive array antenna reception processing;
- a reference signal generating step of generating a reference signal of the signal from said communication terminal apparatus from the demodulated data after being subjected to said interference cancellation processing;
- and
- a weight controlling step of controlling reception weights used for adaptive array antenna reception processing using a difference between the signal subjected to said adaptive array antenna reception processing and said reference signal.
2 more elements
A radio communication method comprising:
- an adaptive array antenna receiving step of carrying out adaptive array antenna reception processing on a signal from a communication terminal apparatus;
- an interference canceling step of carrying out interference cancellation processing on the signal subjected to the adaptive array antenna reception processing;
- an error correction processing step of carrying out error correction processing on the demodulated data after being subjected to said interference cancellation processing;
- a reference signal generating step of generating a reference signal in symbol units of the signal from said communication terminal apparatus from the demodulated data after being subjected to the interference cancellation processing;
- and
- a weight controlling step of controlling reception weights used for adaptive array antenna reception processing using a difference between the signal subjected to said interference cancellation processing and the reference signal.
3 more elements
Dependencies are inferred from the claim text.