Radio communication apparatus and method
First Claim
1. A radio communication apparatus comprising:
- a clock reproducer unit configured to repetitively detect a symbol timing from a Nyquist point in detection-result data;
a first FIFO buffer;
a symbol generator unit configured to controllably generate or non-generate a to-be-transmitted symbol or symbols at every symbol timing detected by the clock reproducer unit, convert the to-be-transmitted symbol or symbols into modulating data pieces, and output the modulating data pieces to the first FIFO buffer;
a first D/A converter configured to read out modulating data pieces from the first FIFO buffer at a predetermined rate and convert the read-out modulating data pieces into an analog modulating signal for use in modulation of a carrier; and
a controller unit configured to control a number of the to-be-transmitted symbol or symbols generated by the symbol generator unit at every symbol timing to hold a number of modulating data pieces in the first FIFO buffer in a predetermined range.
2 Assignments
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Accused Products
Abstract
A radio communication apparatus includes a clock reproducer unit which repetitively detects a symbol timing from a Nyquist point in detection-result data. A symbol generator unit controllably generates or non-generates a to-be-transmitted symbol or symbols at every symbol timing detected by the clock reproducer unit, converts the to-be-transmitted symbol or symbols into modulating data pieces, and outputs the modulating data pieces to a FIFO buffer. A D/A converter reads out modulating data pieces from the FIFO buffer at a predetermined rate and converts the read-out modulating data pieces into an analog modulating signal for use in modulation of a carrier. A controller unit controls a number of the to-be-transmitted symbol or symbols generated by the symbol generator unit at every symbol timing to hold a number of modulating data pieces in the FIFO buffer in a predetermined range.
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Citations
15 Claims
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1. A radio communication apparatus comprising:
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a clock reproducer unit configured to repetitively detect a symbol timing from a Nyquist point in detection-result data; a first FIFO buffer; a symbol generator unit configured to controllably generate or non-generate a to-be-transmitted symbol or symbols at every symbol timing detected by the clock reproducer unit, convert the to-be-transmitted symbol or symbols into modulating data pieces, and output the modulating data pieces to the first FIFO buffer; a first D/A converter configured to read out modulating data pieces from the first FIFO buffer at a predetermined rate and convert the read-out modulating data pieces into an analog modulating signal for use in modulation of a carrier; and a controller unit configured to control a number of the to-be-transmitted symbol or symbols generated by the symbol generator unit at every symbol timing to hold a number of modulating data pieces in the first FIFO buffer in a predetermined range. - View Dependent Claims (2, 3, 4, 5)
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6. A method for radio communication, comprising the steps of:
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detecting a symbol timing from a Nyquist point in detection-result data; controllably generating or non-generating a to-be-transmitted symbol or symbols at every detected symbol timing, converting the to-be-transmitted symbol or symbols into modulating data pieces, and outputting the modulating data pieces to a first FIFO buffer; reading out modulating data pieces from the first FIFO buffer at a predetermined rate and converting the read-out modulating data pieces into an analog modulating signal for use in modulation of a carrier; and controlling a number of the to-be-transmitted symbol or symbols generated at every detected symbol timing to hold a number of modulating data pieces in the first FIFO buffer in a predetermined range. - View Dependent Claims (7, 8, 9, 10)
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11. A radio communication apparatus comprising:
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means for repetitively detecting a symbol timing from a Nyquist point in detection-result data; a first FIFO buffer; means for controllably generating or non-generating a to-be-transmitted symbol or symbols at every detected symbol timing, converting the to-be-transmitted symbol or symbols into modulating data pieces, and writing the modulating data pieces into the first FIFO buffer; means for reading out modulating data pieces from the first FIFO buffer at a predetermined rate and converting the read-out modulating data pieces into an analog modulating signal for use in modulation of a carrier; and means for controlling a number of the to-be-transmitted symbol or symbols generated at every symbol timing to hold a number of modulating data pieces in the first FIFO buffer in a predetermined range. - View Dependent Claims (12, 13, 14, 15)
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Specification