Method and apparatus for performing direction division multiple access
A method and apparatus for performing direction division multiple access. In some embodiments, the method includes: performing motion compensated correlation upon a received signal transmitted from a transceiver to generate at least one motion compensated correlation result; identifying a direction of arrival for the received signal using the at least one motion compensated correlation result; and selecting, using the direction of arrival of the received signal, to communicate with the transceiver.
1. A method for performing directional division multiple access, comprising:
performing motion compensated correlation upon a received signal transmitted from a transceiver to generate at least one motion compensated correlation result;
identifying a direction of arrival for the received signal using the at least one motion compensated correlation result; and
selecting, using the direction of arrival of the received signal, to communicate with the transceiver,
wherein selecting to communicate with the transceiver includes sending a response to the identified direction of arrival, and wherein the response includes at least one of:
adjusting an antenna pattern of the transceiver to establish a beam in the direction of the direction of arrival;
adjusting an antenna pattern of the transceiver to establish an antenna pattern null in the direction of the direction of arrival to suppress the signal in that direction; or
sending beam control information to the transceiver that transmitted the received signal.
2. The method of claim 1 , further comprising receiving motion information comprising an estimate of motion of an antenna of a receiver that received the signal.
3. The method of claim 1 , further comprising generating a plurality of phasor sequence hypotheses related to a direction of interest of the received signal, wherein each phasor sequence hypothesis comprises a time series of phase offset estimates that vary with at least one of receiver motion, frequency, or direction of arrival of the received signals.
4. The method of claim 1 , wherein performing motion compensated correlation includes correlating the received signal with a plurality of direction hypotheses containing estimates of phase offset sequences to accurately correlate the received signals over a long coherent integration period.
5. The method of claim 1 , further comprising determining an optimal correlation result for each received signal by processing the at least one motion compensated correlation result, wherein identifying a direction of arrival includes identifying a direction of arrival vector of each received signal from the optimal correlation result for the signal.
6. The method of claim 1 , wherein the response includes processing the received signal to either increase or decrease the signal to noise ratio for signals received along a certain direction of arrival.
7. An apparatus for performing directional division multiple access, comprising at least one processor and at least one non-transient computer readable medium for storing instructions that, when executed by the at least one processor, causes the apparatus to perform operations comprising:
performing motion compensated correlation upon a received signal transmitted from a transceiver to generate at least one motion compensated correlation result;
identifying a direction of arrival for the received signal using the at least one motion compensated correlation result; and
selecting, using the direction of arrival of the received signal, to communicate with the transceiver,
wherein selecting to communicate with the transceiver includes sending a response to the identified direction of arrival, and wherein the response includes at least one of:
adjusting an antenna pattern of the transceiver to establish a beam in the direction of the direction of arrival;
adjusting an antenna pattern of the transceiver to establish an antenna pattern null in the direction of the direction of arrival to suppress the signal in that direction; or
sending beam control information to the transceiver that transmitted the received signal.
8. The apparatus of claim 7 , the operations further comprising receiving motion information comprising an estimate of motion of an antenna of a receiver that received the signal.
9. The apparatus of claim 7 , the operations further comprising generating a plurality of phasor sequence hypotheses related to a direction of interest of the received signal, wherein each phasor sequence hypothesis comprises a time series of phase offset estimates that vary with at least one of receiver motion, frequency, or direction of arrival of the received signals.
10. The apparatus of claim 7 , the operations performing motion compensated correlation includes correlating the received signal with a plurality of direction hypotheses containing estimates of phase offset sequences to accurately correlate the received signals over a long coherent integration period.
11. The apparatus of claim 7 , the operations further comprising determining an optimal correlation result for each received signal by processing the at least one motion compensated correlation result, wherein identifying a direction of arrival includes identifying a direction of arrival vector of each received signal from the optimal correlation result for the signal.
12. The apparatus of claim 7 , wherein the response includes processing the received signal to either increase or decrease the signal to noise ratio for signals received along a certain direction of arrival.
13. At least one non-transient computer readable medium storing instructions that, when executed by at least one processor, causes the processor to perform operations comprising:
performing motion compensated correlation upon a received signal transmitted from a transceiver to generate at least one motion compensated correlation result;
identifying a direction of arrival for the received signal using the at least one motion compensated correlation result; and
selecting, using the direction of arrival of the received signal, to communicate with the transceiver,
wherein selecting to communicate with the transceiver includes sending a response to the identified direction of arrival, and wherein the response includes at least one of:
adjusting an antenna pattern of the transceiver to establish a beam in the direction of the direction of arrival;
adjusting an antenna pattern of the transceiver to establish an antenna pattern null in the direction of the direction of arrival to suppress the signal in that direction;
processing the received signal to either increase or decrease the signal to noise ratio for signals received along a certain direction of arrival; or
sending beam control information to the transceiver that transmitted the received signal.
14. The medium of claim 13 ,
processing the received signal to either increase or decrease the signal to noise ratio for signals received along a certain direction of arrival.