Radio communication system, radio station, and radio communication mehod
AssigneeNtt Docomo, Inc.
InventorsKoji Maeda, Yuji Aburakawa, Toru Otsu
Life of this patent
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Abstract
A radio communication system comprises: a radio receiver including an interference canceller configured to generate a replica of a received signal and remove an interference signal from the received signal, and a frequency offset estimator configured to estimate a carrier frequency offset between a carrier frequency of the interference signal and a carrier frequency of a desired signal included in the received signal; and a radio transmitter including a frequency controller configured to adjust a carrier frequency of a transmitted desired signal to the carrier frequency of the interference signal based on the carrier frequency offset received from the radio receiver.
Claims17
A radio communication system, comprising:
- a radio receiver including an interference canceller configured to generate a replica of a received signal and remove an interference signal from the received signal, and
- a frequency offset estimator configured to estimate a carrier frequency offset between a carrier frequency of the interference signal and a carrier frequency of a desired signal included in the received signal;
- and
- a radio transmitter including a frequency controller configured to adjust a carrier frequency of a transmitted desired signal to the carrier frequency of the interference signal based on the carrier frequency offset received from the radio receiver.
A radio communication system, comprising:
- a radio receiver including an interference canceller configured to generate a replica of a received signal and remove an interference signal from the received signal,
- a phase difference measurement unit configured to measure a phase difference between a desired signal and the interference signal, and
- an interference quality measurement unit configured to measure an interference reception quality indicating an influence of the interference signal on the received signal;
- and
- a radio transmitter including a controller configured to control at least one of a phase of a transmitted desired signal and a transmission power of the transmitted desired signal based on a measured phase difference and a measured interference reception quality.
A radio station, comprising:
- an interference canceller configured to generate a replica of a received signal and remove an interference signal from the received signal;
- a frequency offset estimator configured to estimate a carrier frequency offset between a carrier frequency of the interference signal and a carrier frequency of a desired signal included in the received signal;
- and
- an information signal generator configured to generate an offset information signal based on the carrier frequency offset.
A radio station, comprising:
- a frequency controller configured to adjust a carrier frequency of a transmitted desired signal to a carrier frequency of an interference signal based on a carrier frequency offset between the carrier frequency of the interference signal and a carrier frequency of a desired signal, and estimated by a radio receiver.
A radio station, comprising:
- a controller configured to control at least one of a phase of a transmitted desired signal and a transmission power of the transmitted desired signal based on a measured phase difference between a desired signal and an interference signal included in a received signal in a radio receiver, and a measured interference reception quality indicating an influence of the interference signal on the received signal.
A radio communication method, comprising:
- estimating a carrier frequency offset between a carrier frequency of an interference signal and a carrier frequency of a desired signal included in a received signal;
- and
- adjusting a carrier frequency of a transmitted desired signal to the carrier frequency of the interference signal based on the carrier frequency offset.
A radio communication method, comprising:
- generating a replica of a received signal and removing an interference signal from the received signal;
- measuring a phase difference between a desired signal and the interference signal;
- measuring an interference reception quality indicating an influence of the interference signal on the received signal;
- and
- controlling at least one of a phase of a transmitted desired signal and a transmission power of the transmitted desired signal based on a measured phase difference and a measured interference reception quality.
Dependencies are inferred from the claim text.