Receiving method and receiving apparatus
AssigneeSanyo Electric Co., Ltd.
InventorSanshiro Shiina
Life of this patent
Estimating the term…
Abstract
A matched filter calculates correlation values between burst signals received and known data. A moving average unit calculates a moving average for the calculated correlation values in a period based on a guard interval. A detector detects the symbol start timing from the calculated moving average. An FFT unit performs FFT transform on symbols in a posterior part among the received burst signals, based on the detected timing of a symbol.
Claims8
A receiving apparatus, comprising:
- a receiver which receives a burst signal formed by a series of symbols containing at least a data interval and a guard interval wherein known data is assigned in a data interval contained in a symbol positioned in a header portion and inverse-Fourier-transformed data is assigned in a data interval contained in a symbol positioned subsequent thereto;
- a matched filter which calculates a correlation value between the burst signal received by said receiver and the known data;
- a moving average unit which calculates a moving average for the correlation values calculated by said matched filter, in a time period on which the guard interval is based;
- a detector which detects symbol start timing from a value of the moving average calculated by said moving average unit;
- and
- a Fourier transform unit which performs Fourier transform on the symbol positioned subsequent thereto in the burst signal received by said receiver, based on the symbol start timing detected by said detector.
A method for receiving a burst signal formed by a series of symbols containing at least a data interval and a guard interval wherein known data is assigned in a data interval contained in a symbol positioned in a header portion and inverse-Fourier-transformed data is assigned in a data interval contained in a symbol positioned subsequent thereto, the method comprising:
- calculating a moving average for correlation values calculated between the received burst signal and the known data, in a time period on which the guard interval is based;
- detecting symbol start timing from a value of the moving average calculated by said calculating;
- and
- performing Fourier transform on the symbol positioned subsequent thereto in the received burst signal, based on the symbol start timing detected by said detecting.
Dependencies are inferred from the claim text.