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Systems and methods for pulse-transmission low-power communication modes are disclosed. A method of pulse transmission communications includes: generating a modulated pulse signal waveform; transforming said modulated pulse signal waveform into at least one higher-order derivative waveform; and tran

Systems and methods for pulse-transmission low-power communication modes are disclosed. A method of pulse transmission communications includes: generating a modulated pulse signal waveform; transforming said modulated pulse signal waveform into at least one higher-order derivative waveform; and transmitting said at least one higher-order derivative waveform as an emitted pulse. The systems and methods significantly reduce lower-frequency emissions from pulse transmission spread-spectrum communication modes, which reduces potentially harmful interference to existing radio frequency services and users and also simultaneously permit transmission of multiple data bits by utilizing specific pulse shapes.

대표청구항 ▼

Systems and methods for pulse-transmission low-power communication modes are disclosed. A method of pulse transmission communications includes: generating a modulated pulse signal waveform; transforming said modulated pulse signal waveform into at least one higher-order derivative waveform; and tran

Systems and methods for pulse-transmission low-power communication modes are disclosed. A method of pulse transmission communications includes: generating a modulated pulse signal waveform; transforming said modulated pulse signal waveform into at least one higher-order derivative waveform; and transmitting said at least one higher-order derivative waveform as an emitted pulse. The systems and methods significantly reduce lower-frequency emissions from pulse transmission spread-spectrum communication modes, which reduces potentially harmful interference to existing radio frequency services and users and also simultaneously permit transmission of multiple data bits by utilizing specific pulse shapes. nstructions which, when executed by a processor, cause the processor to implement a method for applying a filter to a plurality of spread user data streams, the method comprising the steps of: a) combining the plurality of spread user data streams, each of the spread user data streams being a sequence of one-bit values; and b) applying coefficients representing taps of the filter to each of the plurality of spread user data streams, the coefficients being represented by at least one bit and applied with one-bit multiplication to values of either each or the combined plurality of spread user data streams. 14. The invention as recited in claim 13, wherein the coefficients are applied to each spread user data stream before the plurality of user data streams are combined in step a). 15. The invention as recited in claim 13, wherein, for step b), the coefficients are upsampled and one-bit encoded multi-bit coefficients of the filter. 16. The invention as recited in claim 15, wherein the coefficients are applied to each spread user data stream before the plurality of user data streams are combined in step a). 17. The invention as recited in claim 15, wherein the plurality of spread user data streams are combined in step a) to form a channel data stream represented by a sequence of multi-bit values and for step b) the coefficients are applied to the multi-bit values of the channel data stream of step a). 18. An apparatus for applying a filter to a plurality of spread user data streams comprising: first combining means for combining the plurality of spread user data streams, each of the spread user data streams being a sequence of one-bit values; and second combining means for applying coefficients representing taps of the filter to each of the plurality of spread user data streams, the coefficients being represented by at least one bit and applied with one-bit multiplication to values of either each or the combined plurality of spread user data streams. 19. The invention as recited in claim 18, wherein the second combining means applies one or more coefficients to the one-bit values of each spread user data stream before the plurality of user data streams are combined by the first combining means. 20. The invention as recited in claim 18, wherein the coefficients are upsampled and one-bit encoded multi-bit coefficients of the filter. 21. The invention as recited in claim 20, wherein the second combining means applies coefficients to each spread user data stream before the plurality of user data streams are combined by the first combining means. 22. The invention as recited in claim 20, wherein the first combining means combines the plurality of spread user data streams to form a channel data stream represented by a sequence of multi-bit values; and the second combining means applies the coefficients to the multi-bit values of the channel data stream. 23. A method of applying a filter to a plurality of spread user data streams comprising the steps of: a) combining the plurality of spread user data streams, each of the spread user data streams being a sequence of one-bit values, wherein the combined plurality of spread user data streams form a channel data stream, and wherein step a) comprises the steps of: a1) upsampling the channel data stream, and a2) one-bit encoding the channel data stream into a sequence of one-bit values; and b) applying coefficients representing taps of the filter to the sequence of one-bit values representing the channel data stream, the coefficients being represented by at least one bit and applied with one-bit multiplication to values of either i) each of the or ii) the combined plurality of spread user data streams. 24. A method of applying a filter to a plurality of spread user data streams comprising the steps of: a) combining the plurality of spread user data streams, each of the spread user data streams being a sequence of one-bit values; and b) applying coefficients representi ng taps of the filter to each of the plurality of spread user data streams, wherein the coefficients represent taps of a root-raised cosine filter, being represented by at least one bit, and applied with one-bit multiplication to values of either i) each of the or ii) the combined plurality of spread user data streams. 25. A circuit for applying a filter to a plurality of spread user data streams comprising: a combiner for combining the plurality of spread user data streams, each of the spread user data streams being a sequence of one-bit values; and a filter comprising a plurality of one-bit multipliers, each multiplier applying a coefficient corresponding to a filter tap to one or more values of each of the plurality of spread user data streams, wherein each coefficient is an upsampled and one-bit encoded multi-bit coefficient for the tap of the filter, is represented by at least one bit, and is applied with one-bit multiplication to values of either each or the combined plurality of spread user data streams, and wherein the filter comprises a set of separate filters, and each separate filter applies one or more coefficients to one-bit values of a corresponding spread user data stream, and each output value of a separate filter is applied to the combined to combine the filtered plurality of spread user data streams. 26. A circuit for applying a filter to a plurality of spread user data streams comprising: a combiner for combining the plurality of spread user data streams, each of the spread user data streams being a sequence of one-bit values; and a filter comprising a plurality of one-bit multipliers, each multiplier applying a coefficient corresponding to a filter tap to one or more values of each of the plurality of spread user data streams, wherein each coefficient is represented by at least one bit and is applied with one-bit multiplication to values of either each or the combined plurality of spread user data streams, and wherein the combined plurality of spread user data streams form a channel data stream; and the circuit further comprises a modulator for upsampling and one-bit encoding the channel data stream into a sequence of one-bit values; and the filter applies the coefficients to the sequence of one-bit values representing the channel data stream. 27. A computer-readable medium having stored thereon a plurality of instructions, the plurality of instructions including instructions which, when executed by a processor, cause the processor to implement a method for applying a filter to a plurality of spread user data streams, the method comprising the steps of: a) combining the plurality of spread user data streams, each of the spread user data streams being a sequence of one-bit values, wherein the combined plurality of spread user data streams form a channel data stream, and wherein step a) comprises the steps of: a1) upsampling the channel data stream, and a2) one-bit encoding the channel data stream into a sequence of one-bit values; and b) applying coefficients representing taps of the filter to the sequence of one-bit values representing the channel data stream, the coefficients being represented by at least one bit and applied with one-bit multiplication to values of either i) each of the or ii) the combined plurality of spread user data streams. 28. A computer-readable medium having stored thereon a plurality of instructions, the plurality of instructions including instructions which, when executed by a processor, cause the processor to implement a method for applying a filter to a plurality of spread user data streams, the method comprising the steps of: a) combining the plurality of spread user data streams, each of the spread user data streams being a sequence of one-bit values; and b) applying coefficients representing taps of the filter to each of the plurality of spread user data streams, wherein the coefficients represent taps of a root-raised cosine filter, being repr