Appending bursts to create a super burst for improved building penetration

• US 9,344,147 B1
• Filed: 09/27/2011
• Issued: 05/17/2016
• Est. Priority Date: 05/14/2010
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Gutt, Gregory M., Whelan, David A.
• Primary Examiner(s): TAYONG, HELENE E
• Application Number:
  US13/246,705
• Time in Patent Office: 1,694 Days
• Field of Search: 375/259
• US Class Current: 1/1
• CPC Class Codes: G01S 19/02 Details of the space or ground control segments
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 23/00 Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00
• CPC Class Codes: H04L 25/49 using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems spectral shaping H04L25/03828
• CPC Class Codes: H04L 25/4902 Pulse width modulation; Pulse position modulation
• CPC Class Codes: H04L 27/2331 wherein the received signal is demodulated using one or more delayed versions of itself

Abstract

A system, method, and apparatus according to various embodiments are disclosed herein to enable a signal in space scheme to have improved signal penetration within buildings and other attenuated environments. The disclosed enhanced signal delivery method transmits multiple bursts in a successive pattern that is known by a receiver on the ground. This successive transmission pattern of bursts effectively creates a longer correlation sequence that allows a receiver to more readily be able to pull the signal out of the noise and, thus, allows a receiver located in a more stringent, attenuated environment to receive a signal where it previously was unable to do so.

Claims

1. A method for signal encoding, the method comprising:

transmitting, with at least one transmission source, separate burst signals separated by at least one time interval,

wherein each of the burst signals includes more than one transmit bit transmitted on a respective frequency associated with each of the burst signals,

wherein each of at least one information bit is encoded to correspond to a specific predetermined sequence of the more than one transmit bit;

wherein each of the burst signals corresponds to one of the at least one information bit,

receiving, with at least one receiving source, the burst signals;

appending, with at least one processor, the burst signals to create a super burst signal, which provides a stronger code processing gain than provided by one of the burst signals; and

processing, with the at least one processor, the more than one transmit bit from the super burst signal to obtain the at least one information bit.

2. The method of claim 1, wherein two or more of the burst signals are transmitted by a same transmission source.

3. The method of claim 1, wherein two or more of the burst signals are transmitted by different transmission sources.

4. The method of claim 1, wherein two or more of the burst signals are transmitted on a same frequency.

5. The method of claim 1, wherein two or more of the burst signals are transmitted on different frequencies.

6. The method of claim 1, wherein at least one user is associated with the at least one receiving source.

7. The method of claim 6, wherein the at least one user is at least one of an entity and a person.

8. The method of claim 6, wherein the at least one user is at least one of stationary and mobile.

9. The method of claim 1, wherein the at least one transmission source is employed in at least one of a satellite and at least one pseudo-satellite.

10. The method of claim 9, wherein the at least one satellite is at least one of a Lower Earth Orbiting (LEO) satellite, a Medium Earth Orbiting (MEO) satellite, and a Geosynchronous Earth Orbiting (GEO) satellite.

11. The method of claim 1, wherein two or more of the burst signals are transmitted over a same time interval.

12. The method of claim 1, wherein two or more of the burst signals are transmitted over different time intervals, wherein the different time intervals are one of predetermined and random.

13. The method of claim 1, wherein the at least one information bit corresponds to a sequence of two or more of the transmit bits that are received in at least one of chronological order and not in chronological order.

14. The method of claim 13, wherein the sequence of the transmit bits that corresponds to the at least one information bit is at least one of predetermined and random.

15. A system for signal encoding, the system comprising:

at least one transmission source for transmitting separate burst signals separated by at least one time interval,

wherein each of at least one information bit is encoded to correspond to a specific predetermined sequence of more than one transmit bit,

wherein each of the burst signals corresponds to one of the at least one information bit,

wherein each of the burst signals includes the more than one transmit bit transmitted on a respective frequency associated with each of the burst signals;

at least one receiving source for receiving the burst signals; and

at least one processor for appending the burst signals to create a super burst signal, which provides a stronger code processing gain than provided by one of the burst signals, and for processing the more than one transmit bit from the super burst signal to obtain the at least one information bit.

16. The system of claim 15, wherein at least one user is associated with the at least one receiving source.

17. The system of claim 16, wherein the at least one user is at least one of an entity and a person.

18. The system of claim 16, wherein the at least one user is at least one of stationary and mobile.

19. The system of claim 15, wherein the at least one transmission source is employed in at least one of a satellite and at least one pseudo-satellite.

20. The system of claim 19, wherein the at least one satellite is at least one of a Lower Earth Orbiting (LEO) satellite, a Medium Earth Orbiting (MEO) satellite, and a Geosynchronous Earth Orbiting (GEO) satellite.

21. The system of claim 15, wherein two or more of the burst signals are transmitted over a same time interval.

22. The system of claim 15, wherein two or more of the burst signals are transmitted over different time intervals, wherein the different time intervals are one of predetermined and random.

23. The system of claim 15, wherein the at least one information bit corresponds to a sequence of two or more of the transmit bits that are received in at least one of chronological order and not in chronological order.

24. The system of claim 23, wherein the sequence of the transmit bits that corresponds to the at least one information bit is at least one of predetermined and random.