Apparatus, method and system for wireless communication
AssigneeIBM Corporation
InventorsYoshihisa Kanada, Hiroshi Ishikawa
Life of this patent
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Abstract
The subject invention improves tracking performance of an adaptive equalizing operation while reducing the calculation volume. A frame including a training sequence and a mixed data sequence in which at least one symbol of a whitened sequence is dispersively inserted into a data sequence is generated. The frame is converted into a wireless signal, which is then transmitted. The wireless signal of the frame is received. Tap coefficients of an equalization filter are set by using the training sequence in the frame. During reception of the mixed data sequence, an adaptive operation is performed by using the respective symbols of the whitened sequence in the frame and the tap coefficients of the equalization filter are updated.
Claims18
A wireless communication apparatus comprising:
- a frame generating means for generating a frame including a training sequence and a mixed data sequence in which a symbol of a whitened sequence is dispersively inserted into a data sequence;
- and
- a means for converting the frame into a wireless signal, and for transmitting the wireless signal.
A wireless communication apparatus comprising:
- a receiving means for receiving a wireless signal of a frame including a training sequence and a mixed data sequence in which a symbol of a whitened sequence is dispersively inserted into a data sequence;
- an equalization filter connected to said receiving means;
- adaptive operation means for setting tap coefficients of said equalization filter by using the training sequence in the frame;
- and
- tracking means for performing an adaptive operation by using the respective symbols of the whitened sequence in the frame during reception of the mixed data sequence to update the tap coefficients of said equalization filter.
A wireless communication apparatus comprising:
- frame generating means for generating a frame including a training sequence and a mixed data sequence in which a symbol of a whitened sequence is dispersively inserted into a data sequence;
- means for converting the frame into a wireless signal, and for transmitting the wireless signal;
- receiving means for receiving the wireless signal of the frame;
- an equalization filter connected to the receiving means;
- adaptive equalizing means for setting tap coefficients of said equalization filter by using the training sequence in the frame;
- and
- tracking means for performing an adaptive operation by using the respective symbols of the whitened sequence in the frame during reception of the mixed data sequence, and thereby updating the tap coefficients of said equalization filter.
A wireless communication method, comprising the steps of:
- generating a frame including a training sequence and a mixed data sequence in which a symbol of a whitened sequence is dispersively inserted into a data sequence;
- converting the frame into a wireless signal, and transmitting the wireless signal;
- receiving the wireless signal of the frame;
- setting tap coefficients of an equalization filter by using the training sequence in the frame;
- and
- performing an adaptive operation by using the respective symbols of the whitened sequence in the frame during reception of the mixed data sequence, and thereby updating the tap coefficients of the equalization filter.
A wireless communication system having:
- a wireless transmitter having a frame generating means for generating a frame including a training sequence and a mixed data sequence in which a symbol of a whitened sequence is dispersively inserted into a data sequence, and a means for converting the frame into a wireless signal, and for transmitting the wireless signal;
- and
- a wireless receiver having a receiving means for receiving the wireless signal of the frame, an equalization filter connected to said receiving means, an adaptive operation means for setting tap coefficients of said equalization filter by using the training sequence in the frame, and a tracking means for performing an adaptive operation by using the respective symbols of the whitened sequence in the frame during reception of the mixed data sequence, and thereby updating the tap coefficients of the equalization filter.
A wireless communication apparatus, comprising:
- a frame generating means for generating a frame including a training sequence and a mixed data sequence in which respective n symbols of a whitened sequence are dispersively inserted into a data sequence;
- and
- means for converting the frame into a wireless signal, and for transmitting the wireless signal.
A wireless communication apparatus, comprising:
- receiving means for receiving a wireless signal of a frame including a training sequence and a mixed data sequence in which respective n symbols of a whitened sequence are dispersively inserted into a data sequence;
- an equalization filter connected to said receiving means;
- adaptive operation means for setting tap coefficients of said equalization filter by using the training sequence in the frame;
- and
- tracking means for performing an adaptive operation by using a symbol of the whitened sequence in the frame during reception of the mixed data sequence, and thereby updating the tap coefficients of said equalization filter.
A wireless communication method, comprising the steps of:
- generating a frame including a training sequence and a mixed data sequence in which a symbol of a whitened sequence is dispersively inserted into a data sequence;
- and
- converting the frame into a wireless signal, and transmitting the wireless signal.
A wireless communication method, comprising the steps of:
- receiving a wireless signal of a frame;
- setting tap coefficients of an equalization filter by using a training sequence in the frame;
- and
- performing an adaptive operation by using respective symbols of a whitened sequence in the frame during reception of a mixed data sequence, and thereby updating the tap coefficients of the equalization filter.
A wireless communication method, comprising the steps of:
- receiving a wireless signal of a frame;
- and
- performing an adaptive operation by using respective symbols of a whitened sequence dispersed in a mixed data sequence in the frame and thereby updating tap coefficients of an equalization filter.
Dependencies are inferred from the claim text.