Transmitter apparatus, communication system, and communication method
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Abstract
A communication technology for allowing a mobile communication system to accommodate variable rate users, while obtaining a frequency diversity effect. A transmitter apparatus using, for transmission, transmission signals produced based on data symbols of a predetermined transmission method, comprising an FFT processing part for converting the data symbols to frequency domain data; an interleaver for sorting the frequency domain data; and an IFFT processing part for converting the sorted frequency domain data to a time domain signal; wherein the FFT processing part subjects Q received data symbols to Q-point FFT processing, the interleaver produces N data from Q data outputted from the FFT processing part (where N>Q), and the IFFT processing part subjects the N data outputted from the interleaver to N-point IFFT processing.
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Citations
46 Claims
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1-25. -25. (canceled)
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26. A transmitter apparatus for performing transmission using transmission signals generated on the basis of data symbols of a specified transmission method, said transmitter apparatus being characterized by comprising;
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an interleaver for generating interleave-processed data being obtained by performing specified rearrangement processes on frequency domain data to which said data symbols are converted and an IFFT processing part for converting said interleave-processed data to time domain signals, wherein;
said interleaver generates and outputs N pieces of data from Q (N>
Q) data symbols inputted. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A communication system comprising;
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a transmitter apparatus for performing transmission using transmission signals generated on the basis of data symbols of a specified transmission method and a receiver apparatus for restoring said data symbols on the basis of the received reception signals obtained by receiving said transmission signals, said system being characterized in that;
said transmitter apparatus comprises an interleaver for generating interleave-processed data being obtained by performing specified rearrangement processes on frequency domain data to which said data symbols are converted and an IFFT processing part for converting said interleave-processed data to time domain signals, and said receiver apparatus comprises an FFT processing part for converting time domain signals to frequency domain data and a de-interleaver for generating de-interleave-processed data being obtained by performing specified rearrangement processes on said converted frequency domain data, wherein;
said de-interleaver generates and outputs Q pieces of data from N (N>
Q) pieces of data inputted. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44)
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45. A communication method being a transmission method for performing transmission using transmission signals generated on the basis of data symbols of a specified transmission method, said communication method being characterized by comprising;
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an FFT processing step for converting said data symbols to frequency domain data, an interleave-processing step of performing rearrangement processes on said converted frequency domain data, and an IFFT processing step of converting said frequency domain data to time domain signals, wherein;
said interleave-processing step generates and outputs N pieces of data from Q (N>
Q) data symbols inputted.
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46. A communication method comprising;
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a transmission step of performing transmission using transmission signals generated on the basis of data symbols of a specified transmission method and a reception step of receiving transmission signals transmitted by said transmission step and restoring said data symbols, said method being characterized in that;
said transmission step comprises an FFT processing step of converting said data symbols to frequency domain data, an interleave-processing step of performing interleave processes on said converted frequency domain data and an IFFT processing step of converting said frequency domain data to time domain signals, and said reception step comprises an FFT processing step of converting said time domain signals to frequency domain data, a de-interleave-processing step of performing rearrangement processes on said converted frequency domain data and an IFFT processing step of converting said frequency domain data to time domain signals, wherein;
said interleave-processing step generates and outputs N pieces of data from Q (N>
Q) data symbols inputted andsaid de-interleave-processing step generates and outputs Q pieces of data from N (Q<
N) pieces of data inputted.
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Specification