Adaptive finite impulse response (FIR) filter and method
US9810771B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 9, 2015 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | Jan 2, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03605
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An adaptive finite impulse response (FIR) filter for filtering an I/Q data stream having a sample period. The FIR filter comprises at least one sample-period tap delay configured to delay the I/Q data stream by an integer multiple of the sample period of the I/Q data stream, and at least one sub-sample-period tap delay configured to delay the I/Q data stream by a non-integer multiple of the sample period of the I/Q data stream. A set of adaptive weights is provided and configured to weight samples of the delayed I/Q data stream. An adder is responsive to the weighted samples and configured to combine the weighted samples of the delayed I/Q data streams to generate a filtered I/Q data stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.