Wireless repeater with arbitary programmable selectivity
View Patent ↗The invention relates to wireless repeater systems and methods. In embodiments, such systems and methods involve receiving a wireless transmission signal; and processing the wireless transmission signal using a digital signal processing facility (DSP); wherein the DSP is adapted to filter at least one sub-band of the wireless transmission signal using a digital bandpass filter.
1. The method, comprising:
providing a cell phone transmission signal repeater that includes a multi-sub-band bandpass filter for filtering a plurality of sub-bands of a composite multi-band signal;
taking a plurality of sets of filter coefficients wherein each set of filter coefficients represents one sub-band of the composite multi-band signal;
summing at least a portion of the plurality of sets of filter coefficients to form a composite set of filter tap weights; and
filtering the composite multi-band signal with the multi-sub-band bandpass filter using the composite set of filter tap weights.
2. The system of claim 1 wherein the repeater includes a Hilbert filter facility.
3. The system of claim 1 wherein the repeater includes an image noise filter.
4. The system of claim 1 wherein the repeater includes a simplified frequency architecture.
5. The system of claim 4 wherein the simplified frequency architecture includes a high reference oscillator frequency.