Method and transceiver for full duplex communication of ultra wideband signals

• US 20030189975A1
• Filed: 04/11/2003
• Published: 10/09/2003
• Est. Priority Date: 09/20/1994
• Status: Active Grant

• Current Assignee: Alereon Incorporated (PNG Telecommunications, Inc.)
• Original Assignee: Alereon Incorporated (PNG Telecommunications, Inc.)
• Inventors: Fullerton, Larry W.
• Granted Patent: US 7,321,611 B2
• Time in Patent Office: Days
• US Class Current: 375/219
• CPC Class Codes: H04B 1/69 Spread spectrum techniques
• CPC Class Codes: H04B 2201/70707 Efficiency-related aspects

Abstract

An impulse radio transceiver for full duplex ultrawide-band communications. The transceiver comprises an impulse radio transmitter that transmits impulse radio signal pulses, an impulse radio receiver that receives impulse radio signal pulses. Either or both of the impulse radio transmitter and the impulse radio receiver synchronizes the transmission and the reception of the impulse radio signal pulses for pulse interleaved communications. Pulse interleaving avoids self-interference between the transmitted impulse radio signal pulses and the received impulse radio signal pulses. In addition to pulse interleaved communications, bursts of pulses can be transmitted between two transceivers in an interleaved fashion. Alternatively, two different pulse repetition rates are be used to transmit and receive impulse radio signal pulses simultaneously. Still further, selected pulses of the received or transmitted impulse radio signal pulses are blanked to avoid interference.

Claims

1. A method for full duplex communication of ultra wideband signals, comprising:

receiving a first ultra wideband signal; and

transmitting a second ultra wideband signal in accordance with a predetermined delay relative to reception of said first ultra wideband signal.

2. The method of claim 1, wherein at least one of said first ultra wideband signal and said second ultra wideband signal comprises one or more pulses.

3. The method of claim 1, wherein said predetermined delay is selected from a plurality of predetermined delays.

4. The method of claim 1, wherein said predetermined delay corresponds to at least one of a propagation delay and a scanning delay.

5. The method of claim 1, wherein said predetermined delay is in accordance with a code division multiple access scheme.

6. A method for full duplex communication of ultra wideband signals, comprising:

transmitting a first ultra wideband signal having a first repetition rate; and

receiving a second ultra wideband signal having a second repetition rate selected relative to the first repetition rate to reduce interference.

7. The method of claim 6, wherein at least one of said first ultra wideband signal and said second ultra wideband signal comprises a plurality of pulses.

8. The method of claim 6, wherein a blanking pulse is produced to prevent receiving of said second ultra wideband signal when transmitting said first ultra wideband signal.

9. The method of claim 8, wherein said blanking pulse is produced by gating a trigger signal that controls transmitting said first ultra wideband signal.

10. The method of claim 6, wherein said first repetition rate and said second repetition rate are selected in accordance with a frequency division multiple access scheme.

11. An ultra wideband transceiver for full duplex ultra wideband communications, comprising:

an impulse radio receiver that receives a first ultra wideband signal; and

an impulse radio transmitter that transmits a second ultra wideband signal;

said impulse radio transmitter including a controller that controls the transmission of said second ultra wideband signal such that transmission of said second ultra wideband signal occurs in accordance with a predetermined delay relative to reception of said first ultra wideband signal.

12. The ultra wideband transceiver of claim 11, wherein at least one of said first ultra wideband signal and said second ultra wideband signal comprises one or more pulses.

13. The ultra wideband transceiver of claim 11, wherein said predetermined delay is selected from a plurality of predetermined delays.

14. The ultra wideband transceiver of claim 11, wherein said predetermined delay corresponds to at least one of a propagation delay and a scanning delay.

15. The ultra wideband transceiver of claim 11, wherein said predetermined delay is in accordance with a code division multiple access scheme.

16. An ultra wideband transceiver for full duplex ultra wideband communications, comprising:

an impulse radio receiver that receives a first ultra wideband signal having a first repetition rate; and

an impulse radio transmitter that transmits a second ultra wideband signal having a second transmission rate selected relative to the first repetition rate to reduce interference.

17. The ultra wideband transceiver of claim 16, wherein at least one of said first ultra wideband signal and said second ultra wideband signal comprises a plurality of pulses.

18. The ultra wideband transceiver of claim 16, further comprising a controller that produces a blanking pulse to prevent interference between said second ultra wideband signal and said first ultra wideband signal.

19. The ultra wideband transceiver of claim 18, wherein said blanking pulse is produced by gating a trigger signal that controls the transmission of said first ultra wideband signal.

20. The ultra wideband transceiver of claim 16, wherein said first repetition rate and said second repetition rate are in accordance with a frequency division multiple access scheme.