Multipath processing systems and methods
Various embodiments of multipath processing systems and methods are disclosed. One method embodiment, among others, comprises the steps of providing a frequency domain channel response corresponding to a received signal, and applying a fast Fourier transform (FFT) on the frequency domain channel response to provide multi-path channel information.
1 . A method, comprising:
providing a frequency domain channel response corresponding to a received signal; and
applying a fast Fourier transform (FFT) on the frequency domain channel response to provide multi-path channel information.
2 . The method of claim 1 , further comprising using the multi-path channel information to avoid adjacent channel interference corresponding to the received signal.
3 . The method of claim 2 , wherein using comprises adjusting a sampling window position based on the multi-path channel information to extract data of interest corresponding to the received signal.
4 . The method of claim 3 , wherein adjusting a sampling window position comprises adjusting the sampling window position based on an error metric derived from the multi-path channel information, the error metric based on a derived energy metric corresponding to a desired multipath signal and other multipath signals.
5 . The method of claim 2 , wherein using comprises determining a start point to extract data of interest corresponding to the received signal based on the multi-path channel information.
6 . The method of claim 1 , further comprising extracting data of interest based on the multi-path channel information while avoiding adjacent channel interference.
7 . The method of claim 1 , further comprising receiving multipath signals corresponding to the received signal over a wired connection.
8 . The method of claim 1 , further comprising wirelessly receiving multipath signals corresponding to the received signal.
9 . A system, comprising:
frequency domain channel response logic configured to provide a frequency domain channel response based on a received signal; and
a fast Fourier transform (FFT) logic configured to provide multi-path channel information based on the frequency domain channel response.
10 . The system of claim 9 , further comprising sampling logic configured to use the multi-path channel information to avoid adjacent channel interference corresponding to the received signal.
11 . The system of claim 10 , wherein the sampling logic is further configured to adjust a sampling window based on the multi-path channel information to extract data of interest corresponding to the received signal.
12 . The system of claim 11 , wherein the sampling logic is further configured to adjust a sampling window based on a error metric derived from the multi-path channel information, the error metric based on an energy metric corresponding to a desired multipath signal and other multipath signals derived by the sampling logic.
13 . The system of claim 10 , wherein the sampling logic is further configured to determine a start point to extract data of interest corresponding to the received signal based on the multi-path channel information.
14 . The system of claim 10 , wherein the sampling logic is configured to extract data of interest based on the multi-path channel information while avoiding adjacent channel interference.
15 . The system of claim 10 , further comprising pre-processing logic coupled to the sampling logic, the pre-processing logic configured to receive multipath signals corresponding to the received signal over a wired connection.
16 . The system of claim 10 , further comprising pre-processing logic coupled to the sampling logic, the pre-processing logic configured to receive multipath signals corresponding to the received signal over a wired connection.
17 . A system, comprising:
means for generating a frequency domain channel response corresponding to a received signal; and
means for applying a fast Fourier transform (FFT) on the frequency domain channel response to provide multi-path channel information.
18 . The system of claim 17 , wherein the means for generating comprises sampling logic.
19 . The system of claim 17 , wherein the means for generating comprises a FFT logic and channel estimation unit.
20 . The system of claim 17 , wherein the means for applying comprises a FFT logic.
21 . The system of claim 17 , further comprising means for sampling configured to use the multi-path channel information to avoid adjacent channel interference corresponding to the received signal while extracting data of interest corresponding to the received signal.
22 . The system of claim 21 , wherein the means for sampling comprises a phase-locked loop.
23 . The system of claim 21 , wherein the means for sampling, the means for generating, and the means for applying comprises hardware, software, or a combination of hardware and software.
24 . The system of claim 21 , wherein the means for sampling, the means for generating, and the means for applying are disposed in a wireless communications device or a wired communications device.