Synchronization method, receive end, and transmit end
First Claim
1. A synchronization signal receiving method, comprising:
- receiving, by a receiver device, a synchronization signal sent by a transmitter device, wherein the synchronization signal comprises a carrier frequency synchronization sequence, wherein the carrier frequency synchronization sequence is zc(m)=e±
jπ
m(m+1+2q)/L, m=0, 1, . . . , L−
1, q∈
Z, wherein L indicates a length of the carrier frequency synchronization sequence, q indicates a parameter of the carrier frequency synchronization sequence, Z indicates an integer set, e±
jπ
m(m+1+2q)/L indicates the (±
jπ
m(m+1+2q)/L)th power of e, and e is a natural constant;
performing, by the receiver device, frequency offset estimation according to the carrier frequency synchronization sequence to obtain a frequency offset estimation value; and
in response to the transmitter device sending another signal subsequent to the synchronization signal, performing, by the receiver device, frequency compensation on the another signal sent by the transmitter device based on the frequency offset estimation value.
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Accused Products
Abstract
The present invention provides a synchronization signal receiving method, including: receiving, by a receive end, a synchronization sequence sent by a transmit end, where the synchronization sequence includes a carrier frequency synchronization sequence, the carrier frequency synchronization sequence is zc(m)=e±jπm(m+1+2q)/L, m=0, 1, . . . , L−1, q∈Z, L indicates a length of the carrier frequency synchronization sequence, q indicates a parameter of the carrier frequency synchronization sequence, Z indicates an integer set, e±jπm(m+1+2q)/L indicates the (±jπm(m+1+2q)/L)th power of e, and e is a natural constant; and performing, by the receive end, frequency offset estimation according to the received synchronization sequence, to obtain a frequency offset estimation value. With the technical solutions of embodiments of the present invention, accuracy of frequency offset estimation can be improved.
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Citations
20 Claims
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1. A synchronization signal receiving method, comprising:
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receiving, by a receiver device, a synchronization signal sent by a transmitter device, wherein the synchronization signal comprises a carrier frequency synchronization sequence, wherein the carrier frequency synchronization sequence is zc(m)=e±
jπ
m(m+1+2q)/L, m=0, 1, . . . , L−
1, q∈
Z, wherein L indicates a length of the carrier frequency synchronization sequence, q indicates a parameter of the carrier frequency synchronization sequence, Z indicates an integer set, e±
jπ
m(m+1+2q)/L indicates the (±
jπ
m(m+1+2q)/L)th power of e, and e is a natural constant;performing, by the receiver device, frequency offset estimation according to the carrier frequency synchronization sequence to obtain a frequency offset estimation value; and in response to the transmitter device sending another signal subsequent to the synchronization signal, performing, by the receiver device, frequency compensation on the another signal sent by the transmitter device based on the frequency offset estimation value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A synchronization signal sending method, comprising:
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generating, by a transmitter device, a synchronization signal, wherein the synchronization signal comprises a carrier frequency synchronization sequence, wherein the carrier frequency synchronization sequence is zc(m)=e±
jπ
m(m+1+2q)/L, m=0, 1, . . . , L−
1, q∈
Z, L wherein L indicates a length of the carrier frequency synchronization sequence, q indicates a parameter of the carrier frequency synchronization sequence, Z indicates an integer set, e±
jπ
m(m+1+2q)/L indicates the (±
jπ
m(m+1+2q)/L)th power of e, and e is a natural constant;sending, by the transmitter device, the synchronization signal to a receiver device, to enable the receiver device to perform frequency offset estimation according to the carrier frequency synchronization sequence and to obtain a frequency offset estimation value; and sending, by the transmitter device, another signal subsequent to the synchronization signal to the receiver device, wherein the receiver device performs frequency compensation on the another signal sent by the transmitter device based on the frequency offset estimation value. - View Dependent Claims (10)
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11. An apparatus, receive end, comprising:
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a receiver device, configured to receive a synchronization signal sent by a transmitter device, wherein the synchronization signal comprises a carrier frequency synchronization sequence, wherein the carrier frequency synchronization sequence is zc(m)=e±
jπ
m(m+1+2q)/L, m=0, 1, . . . , L−
1, q∈
Z, wherein L indicates a length of the carrier frequency synchronization sequence, q indicates a parameter of the carrier frequency synchronization sequence, Z indicates an integer set, e±
jπ
m(m+1+2q)/L indicates the (±
jπ
m(m+1+2q)/L)th power of e, and e is a natural constant; anda processor, configured to perform frequency offset estimation according to the carrier frequency synchronization sequence to obtain a frequency offset estimation value; wherein in response to the receiver device receiving another signal subsequent to the synchronization signal from the transmitter device, the processor is configured to perform frequency compensation on the another signal sent by the transmitter device based on the frequency offset estimation value. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. An apparatus, comprising:
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a processor, configured to generate a synchronization signal, wherein the synchronization signal comprises a carrier frequency synchronization sequence, wherein the carrier frequency synchronization sequence is zc(m)=e±
jπ
m(m+1+2q)/L, m=0, 1, . . . , L−
1, q∈
Z, wherein L indicates a length of the carrier frequency synchronization sequence, q indicates a parameter of the carrier frequency synchronization sequence, Z indicates an integer set, e±
jπ
m(m+1+2q)/L indicates the (±
jπ
m(m+1+2q)/L)th power of e, and e is a natural constant; anda transmitter, configured to; send the synchronization signal generated by the processor to a receiver device, to enable the receiver device to perform frequency offset estimation according to the carrier frequency synchronization sequence, and to obtain a frequency offset estimation value, and send another signal subsequent to the synchronization signal to the receiver device, wherein the receiver device performs frequency compensation on the another signal based on the frequency offset estimation value. - View Dependent Claims (20)
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Specification