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A wireless system including a decoding module, an estimating module and a searching module is provided. The decoding module receives and decodes a packet to generate a decoding result. The estimating module retrieves package length information from the decoding result, and estimates a transmission e

A wireless system including a decoding module, an estimating module and a searching module is provided. The decoding module receives and decodes a packet to generate a decoding result. The estimating module retrieves package length information from the decoding result, and estimates a transmission end time of the packet according to the packet length information. The searching module determines a search start time according to the transmission end time, and starts packet searching at the search start time.

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1. A wireless receiving system, comprising: a decoding module, configured to receive and decode a packet to generate a decoding result;an estimating module, configured to retrieve packet length information from the decoding result, and to estimate an estimated transmission end time of the packet acc

1. A wireless receiving system, comprising: a decoding module, configured to receive and decode a packet to generate a decoding result;an estimating module, configured to retrieve packet length information from the decoding result, and to estimate an estimated transmission end time of the packet according to the packet length information; anda searching module, configured to determine a search start time according to the estimated transmission end time, and to start packet searching at the search start time;wherein, the estimating module retrieves the packet length information from a part of the decoding result, and estimates the estimated transmission end time of the packet before the packet is completely decoded. 2. The wireless receiving system according to claim 1, wherein the searching module adds the estimated transmission end time with a minimum packet interval to generate the search start time. 3. A wireless receiving system, comprising: a decoding module, configured to receive and decode a packet to generate a decoding result;an estimating module, configured to retrieve packet length information from the decoding result, and to estimate an estimated transmission end time of the packet according to the packet length information; anda searching module, configured to determine a search start time according to the estimated transmission end time, and to start packet searching at the search start time;wherein, the estimating module estimates the estimated transmission end time by adding a start time of the packet with an estimated length, the packet is compliant to a legacy mode of 802.11n specifications, the packet length information comprises a parameter LENGTH and a parameter N_DBPS, and the estimating module estimates the estimated length according to: L=Ceiling((LENGTH*8+22)/N_DBPS)*4 μs; andwherein, the calculation symbol Ceiling represents a minimum integer greater than or equal to a calculation target, and the estimated length is the length L added with a predetermined packet interval length. 4. The wireless receiving system according to claim 3, wherein the searching module adds the estimated transmission end time with a minimum packet interval to generate the search start time. 5. A wireless receiving system, comprising: a decoding module, configured to receive and decode a packet to generate a decoding result;an estimating module, configured to retrieve packet length information from the decoding result, and to estimate an estimated transmission end time of the packet according to the packet length information; anda searching module, configured to determine a search start time according to the estimated transmission end time, and to start packet searching at the search start time;wherein, the estimating module estimates the estimated transmission end time by adding a start time of the packet with an estimated length of the packet, the packet is compliant to a high throughput mixed mode of 802.11n specifications, the packet length comprises a parameter HT_LENGTH and a parameter HT_N_DBPS, and the estimating module estimates the estimated length according to: L=Ceiling((HT_LENGTH*8+22)/HT_N_DBPS)*4 μs+8 μs; orL=Ceiling((HT_LENGTH*8+22)/HT_N_DBPS)*3.2 μs+8 μs; andwherein, the calculation symbol Ceiling represents a minimum integer greater than or equal to a calculation target, and the estimated length is the length L added with a predetermined packet interval length. 6. The wireless receiving system according to claim 5, wherein the searching module adds the estimated transmission end time with a minimum packet interval to generate the search start time. 7. A wireless receiving system, comprising: a decoding module, configured to receive and decode a packet to generate a decoding result;an estimating module, configured to retrieve packet length information from the decoding result, and to estimate an estimated transmission end time of the packet according to the packet length information; anda searching module configured to determine a search start time according to the estimated transmission end time, and to start packet searching at the search start time;wherein, the estimating module estimates the estimated transmission end time by adding a start time of the packet with an estimated length of the packet, the packet is compliant to a high throughput greenfield mode of 802.11n specifications, the packet length comprises a parameter HT_LENGTH and a parameter HT_N_DBPS, and the estimating module estimates the estimated length according to: L=Ceiling((HT_LENGTH*8+22)/HT_N_DBPS)*4 μs; andwherein, the calculation symbol Ceiling represents a minimum integer greater than or equal to a calculation target, and the estimated length is the length L added with a predetermined packet interval length. 8. The wireless receiving system according to claim 7, wherein the searching module adds the estimated transmission end time with a minimum packet interval to generate the search start time. 9. A signal processing method, applied to a wireless receiving system, comprising: a) receiving and decoding a packet to generate a decoding result;b) retrieving packet length information from the decoding result, and estimating an estimated transmission end time of the packet according to the packet length information; andc) determining a search start time according to the estimated transmission end time, and starting packet searching at the search start time;wherein, step (b) comprises retrieving the packet length information from a part of the decoding result, and estimating the estimated transmission end time of the packet before the packet is completely decoded. 10. The signal processing method according to claim 9, wherein step (c) comprises adding the estimated transmission end time with a minimum packet interval to generate the search start time. 11. A signal processing method, applied to a wireless receiving system, comprising: a) receiving and decoding a packet to generate a decoding result;b) retrieving packet length information from the decoding result, and estimating an estimated transmission end time of the packet according to the packet length information; andc) determining a search start time according to the estimated transmission end time, and starting packet searching at the search start time;wherein, step (b) comprises estimating the estimated transmission end time by adding a start time of the packet with an estimated length, the packet is compliant to a legacy mode of 802.11n specifications, the packet length information comprises a parameter LENGTH and a parameter N_DBPS, and step (b) comprises estimating the estimated length according to: L=Ceiling((LENGTH*8+22)/N_DBPS)*4 μs; andwherein, the calculation symbol Ceiling represents a minimum integer greater than or equal to a calculation target, and the estimated length is the length L added with a predetermined packet interval length. 12. The signal processing method according to claim 11, wherein step (c) comprises adding the estimated transmission end time with a minimum packet interval to generate the search start time. 13. A signal processing method, applied to a wireless receiving system, comprising: a) receiving and decoding a packet to generate a decoding result;b) retrieving packet length information from the decoding result, and estimating an estimated transmission end time of the packet according to the packet length information; andc) determining a search start time according to the estimated transmission end time, and starting packet searching at the search start time;wherein, step (b) comprises estimating the estimated transmission end time by adding a start time of the packet with an estimated length of the packet, the packet is compliant to a high throughput mixed mode of 802.11n specifications, the packet length comprises a parameter HT_LENGTH and a parameter HT_N_DBPS, and step (b) comprises estimating the estimated length according to: L=Ceiling((HT_LENGTH*8+22)/HT_N_DBPS)*4 μs+8 μs; orL=Ceiling((HT_LENGTH*8+22)/HT_N_DBPS)*3.2 μs+8 μs; andwherein, the calculation symbol Ceiling represents a minimum integer greater than or equal to a calculation target, and the estimated length is the length L added with a predetermined packet interval length. 14. The signal processing method according to claim 13, wherein step (c) comprises adding the estimated transmission end time with a minimum packet interval to generate the search start time. 15. A signal processing method, applied to a wireless receiving system, comprising: a) receiving and decoding a packet to generate a decoding result;b) retrieving packet length information from the decoding result, and estimating an estimated transmission end time of the packet according to the packet length information; anddetermining a search start time according to the estimated transmission end time, and starting packet searching at the search start time;wherein, step (b) comprises estimating the estimated transmission end time by adding a start time of the packet with an estimated length of the packet, the packet is compliant to a high throughput greenfield mode of 802.11n specifications, the packet length comprises a parameter HT_LENGTH and a parameter HT_N_DBPS, and step (b) comprises estimating the estimated length according to: L=Ceiling((HT_LENGTH*8+22)/HT_N_DBPS)*4 μs; andwherein, the calculation symbol Ceiling represents a minimum integer greater than or equal to a calculation target, and the estimated length is the length L added with a predetermined packet interval length. 16. The signal processing method according to claim 15, wherein step (c) comprises adding the estimated transmission end time with a minimum packet interval to generate the search start time.