Timing detection method, communication system and receiving apparatus
AssigneeNTT, Inc.
InventorsHiroyuki Fukumoto, Seiji Omori, Yosuke Fujino, Miharu Oiwa, Ryota Okumura, Yuya Ito
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Abstract
The transmission apparatus intermittently transmits a physical frame of a transmitted signal. The receiving apparatus includes a correlation calculation unit and a determination unit. The correlation calculation unit calculates a correlation between the received signal and each of the correlation sequences subjected to Doppler shift of a plurality of types of shift amounts. The determination unit determines that the physical frame has been received in a case where any one of the calculation results obtained by the correlation calculation unit exceeds the threshold.
Claims6
A timing detection method comprising:
- intermittently transmitting, by a transmission apparatus, a physical frame of a transmitted signal;
- calculating, by a receiving apparatus, a correlation between a received signal and each of correlation sequences subjected to Doppler shift of a plurality of types of shift amounts;
- and
- determining, by the receiving apparatus, that the physical frame has been received in a case where any one of calculation results exceeds a threshold,
- wherein each of the plurality of types of shift amounts is any value obtained by multiplying a reciprocal of a product of a sequence length of a correlation sequence and a symbol rate of the physical frame by an integer.
A timing detection method comprising:
- calculating a correlation between a received signal having been transmitted from a transmission apparatus that intermittently transmits a physical frame of a transmitted signal and each of correlation sequences subjected to Doppler shift of a plurality of types of shift amounts;
- and
- determining that the physical frame has been received in a case where any one of calculation results exceeds a threshold,
- wherein each of the plurality of types of shift amounts is any value obtained by multiplying a reciprocal of a product of a sequence length of a correlation sequence and a symbol rate of the physical frame by an integer.
A communication system comprising a transmission apparatus and a receiving apparatus,
- wherein the transmission apparatus intermittently transmits a physical frame of transmitted signal, and
- the receiving apparatus includes:
- a correlation calculation circuitry that calculates a correlation between a received signal and each of correlation sequences subjected to Doppler shift of a plurality of types of shift amounts;
- and
- a determination circuitry that determines that the physical frame has been received in a case where any one of calculation results obtained by the correlation calculation circuitry exceeds a threshold,
- wherein each of the plurality of types of shift amounts is any value obtained by multiplying a reciprocal of a product of a sequence length of a correlation sequence and a symbol rate of the physical frame by an integer.
A receiving apparatus comprising:
- a correlation calculation circuitry that calculates a correlation between a received signal having been transmitted from a transmission apparatus that intermittently transmits a physical frame of a transmitted signal and each of correlation sequences subjected to Doppler shift of a plurality of types of shift amounts;
- and
- a determination circuitry that determines that the physical frame has been received in a case where any one of calculation results obtained by the correlation calculation circuitry exceeds a threshold,
- wherein each of the plurality of types of shift amounts is any value obtained by multiplying a reciprocal of a product of a sequence length of a correlation sequence and a symbol rate of the physical frame by an integer.
Dependencies are inferred from the claim text.