Einzeltreffer — DigiBib

Various exemplary embodiments relate to a method for improving reception of transmissions with first adjacent interference signals, the method including selecting one or more time samples from each of two or more antennas; generating a lower first adjacent interference (LFAI) signal, a desired signal, and an upper first adjacent interference (UFAI) signal for each of the time samples; calculating a lower weighting co-efficient based on the LFAI signal; calculating a middle weighting co-efficient based on the desired signal; calculating a upper weighting co-efficient based on the UFAI signal; combining the lower weighting co-efficient with a filtered LFAI signal into a weighted lower signal; combining the middle weighting co-efficient with a filtered desired signal into a weighted middle signal; combining the upper weighting co-efficient with a filtered UFAI signal into a weighted upper signal; and combining the weighted lower signal, the weighted middle signal, and the weighted upper signal.

Titel:	BEAM FORMING WITH DOUBLE-NULL-STEERING FOR IN-BAND ON-CHANNEL RECEPTION
Link:	Zum Volltext
Veröffentlichung:	2016
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Applications Sprachen: English Document Number: 20160142119 Publication Date: May 19, 2016 Appl. No: 14/546576 Application Filed: November 18, 2014 Claim: 1. A method for improving reception of transmissions with first adjacent interference signals, the method comprising: selecting one or more time samples from each of two or more antennas; generating a lower first adjacent interference (LFAI) signal, a desired signal, and an upper first adjacent interference (UFAI) signal for each of the time samples; calculating a lower weighting co-efficient based on the LFAI signal; calculating a middle weighting co-efficient based on the desired signal; calculating an upper weighting co-efficient based on the UFAI signal; combining the lower weighting co-efficient with a filtered LFAI signal into a weighted lower signal; combining the middle weighting co-efficient with a filtered desired signal into a weighted middle signal; combining the upper weighting co-efficient with a filtered UFAI signal into a weighted upper signal; and combining the weighted lower signal, the weighted middle signal, and the weighted upper signal. Claim: 2. The method of claim 1, wherein calculating the lower weighting co-efficient based on the LFAI signal further comprises: shifting the LFAI signal to zero; and calculating the upper weighting co-efficient based on the UFAI signal further comprises: shifting the UFAI signal to zero. Claim: 3. The method of claim 1, wherein calculating the lower weighting co-efficient based on the LFAI signal further comprises: filtering the LFAI signal to include the lowest half of the LFAI signal; calculating a middle weighting co-efficient based on the desired signal further comprises: filtering the desired signal to include the middle portion of the desired signal which comprises half the desired signal; and calculating the upper weighting co-efficient based on the UFAI signal further comprises: filtering the UFAI signal to include the upper-most half of the LFAI signal. Claim: 4. The method of claim 1, wherein calculating the lower weighting co-efficient based on the LFAI signal further comprises: generating an inverse co-variance matrix based on the LFAI signal; calculating a middle weighting co-efficient based on the desired signal further comprises: generating an inverse co-variance matrix based on the desired signal; and calculating the upper weighting co-efficient based on the UFAI signal further comprises: generating an inverse co-variance matrix based on the UFAI signal. Claim: 5. The method of claim 1, wherein calculating the lower weighting co-efficient based on the LFAI signal further comprises: calculating a lower weighting co-efficient that maximizes the Signal-to-Interference-plus-Noise-Ratio (SINR) of the LFAI signal; calculating a middle weighting co-efficient based on the desired signal further comprises: calculating a middle weighting co-efficient that maximizes the SINR of the desired signal; and calculating the upper weighting co-efficient based on the UFAI signal further comprises: calculating an upper weighting co-efficient that maximizes the SINR of the UFAI signal. Claim: 6. The method of claim 1, further comprising: generating a filtered LFAI signal; generating a filtered desired signal; and generating a filtered UFAI signal. Claim: 7. The method of claim 6, wherein generating the filtered LFAI signal further comprises: shifting the LFAI signal to zero; and generating the filtered UFAI signal further comprises: shifting the UFAI signal to zero. Claim: 8. The method of claim 7, wherein generating the filtered LFAI signal further comprises: filtering the LFAI signal to include a lower digital sideband; generating the filtered desired signal further comprises: filtering the desired signal to include an analog band; and generating the filtered UFAI signal further comprises: filtering the UFAI signal to include an upper digital sideband. Claim: 9. A device for improving reception of transmissions with first adjacent interference signals, the device comprising: an antenna array comprising two or more antennas; a radio front-end block comprising one or more radio front ends connected to each of the two or more antennas; one or more analog-to-digital converters connected to the one or more radio front-ends; one or more baseband blocks connected to the one or more analog-to-digital converters; and a digital adaptive beam-former block connected to each of the one or more baseband blocks. Claim: 10. The device of claim 9, the digital adaptive beam-former block further comprising: a training block connected to each of the one or more baseband blocks; a coefficient-update block connected to the training block; one or more finite impulse response (FIR) filter blocks connected to the coefficient-update block and each of the one or more baseband blocks; and a combiner block connected to each of the one or more FIR filter blocks. Claim: 11. The device of claim 10, wherein: the one or more baseband blocks is configured to select one or more time samples from each of the two or more antennas; the training block is configured to generate a lower first adjacent interference (LFAI) signal for each of the time samples, generate a desired signal for each of the time samples, and generate an upper first adjacent interference (UFAI) signal for each of the time samples; and the coefficient-update block is configured to calculate a lower weighting co-efficient based on the LFAI signal, calculate a middle weighting co-efficient based on the desired signal, and calculate an upper weighting co-efficient based on the UFAI signal. Claim: 12. The device of claim 11, wherein: the coefficient-update block is further configured to generate an inverse co-variance matrix based on the LFAI signal, generate an inverse co-variance matrix based on the desired signal, and generate an inverse co-variance matrix based on the UFAI signal. Claim: 13. The device of claim 11, wherein: the coefficient-update block is further configured to calculate a lower weighting co-efficient that maximizes the Signal-to-Interference-plus-Noise-Ratio (SINR) of the LFAI signal, calculate a middle weighting co-efficient that maximizes the SINR of the desired signal, and calculate an upper weighting co-efficient that maximizes the SINR of the UFAI signal. Claim: 14. The device of claim 10, wherein: the one or more finite impulse response (FIR) filter blocks is configured to generate a filtered lower first adjacent interference (LFAI) signal, generate a filtered desired signal, and generate a filtered upper first adjacent interference (UFAI) signal. Claim: 15. The device of claim 14, wherein: the one or more finite impulse response (FIR) filter blocks is further configured to shift the LFAI signal to zero, and shift the UFAI signal to zero. Claim: 16. The device of claim 14, wherein: the one or more finite impulse response (FIR) filter blocks is further configured to filter the LFAI signal to include a lower digital sideband, filter the desired signal to include an analog band, and filter the UFAI signal to include an upper digital sideband. Claim: 17. The device of claim 14, wherein: the one or more finite impulse response (FIR) filter blocks is further configured to combine a lower weighting co-efficient with the filtered LFAI signal into a weighted lower signal, combine a middle weighting co-efficient with the filtered desired signal into a weighted middle signal, and combine the upper weighting co-efficient with the filtered UFAI signal into a weighted upper signal. Claim: 18. The device of claim 10, wherein: the one or more baseband blocks is configured to select one or more time samples from each of the two or more antennas; the training block is configured to generate a lower first adjacent interference (LFAI) signal for each of the time samples, generate a desired signal for each of the time samples, and generate an upper first adjacent interference (UFAI) signal for each of the time samples; the coefficient-update block is configured to calculate a lower weighting co-efficient based on the LFAI signal, calculate a middle weighting co-efficient based on the desired signal, and calculate an upper weighting co-efficient based on the UFAI signal; the one or more finite impulse response (FIR) filter blocks is configured to generate a filtered LFAI signal, generate a filtered desired signal, generate a filtered UFAI signal, combine the lower weighting co-efficient with the filtered LFAI signal into a weighted lower signal, combine the middle weighting co-efficient with the filtered desired signal into a weighted middle signal, combine the upper weighting co-efficient with the filtered UFAI signal into a weighted upper signal; and the combiner block is configured to combine the weighted lower signal, the weighted middle signal, and the weighted upper signal. Claim: 19. The device of claim 9, the one or more baseband blocks configured to select one or more time samples from each of the two or more antennas; the digital adaptive beam-former block configured to: generate a lower first adjacent interference (LFAI) signal, a desired signal, and an upper first adjacent interference (UFAI) signal for each of the time samples; calculate a lower weighting co-efficient based on the LFAI signal; calculate a middle weighting co-efficient based on the desired signal; calculate an upper weighting co-efficient based on the UFAI signal; combine the lower weighting co-efficient with a filtered LFAI signal into a weighted lower signal; combine the middle weighting co-efficient with a filtered desired signal into a weighted middle signal; combine the upper weighting co-efficient with a filtered UFAI signal into a weighted upper signal; and combine the weighted lower signal, weighted middle signal, and weighted upper signal. Current International Class: 04; 04

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BEAM FORMING WITH DOUBLE-NULL-STEERING FOR IN-BAND ON-CHANNEL RECEPTION