Full duplex ultrawide-band communication system and method

• US 6,549,567 B1
• Filed: 12/09/1999
• Issued: 04/15/2003
• Est. Priority Date: 09/20/1994
• Status: Expired due to Fees

• Current Assignee: Alereon Incorporated (PNG Telecommunications, Inc.)
• Original Assignee: Time Domain Corporation (Humatics Corporation)
• Inventors: Fullerton, Larry W.
• Primary Examiner(s): Ghebretinsae, Temesghen
• Application Number:
  US09/458,010
• Time in Patent Office: 1,223 Days
• Field of Search: 375/342, 375/295, 375/219, 370/503, 370/280
• US Class Current: 375/219
• CPC Class Codes: H04B 1/56 with provision for simultaneous communication in two directions
• CPC Class Codes: H04B 1/70753 Partial phase search
• CPC Class Codes: H04B 1/708 Parallel implementation
• CPC Class Codes: H04B 1/7183 Synchronisation
• CPC Class Codes: H04B 1/719 Interference-related aspects
• CPC Class Codes: H04B 14/026 using pulse time characteristics modulation, e.g. width, position, interval
• CPC Class Codes: H04B 2001/6908 using time hopping
• CPC Class Codes: H04B 2201/70707 Efficiency-related aspects
• CPC Class Codes: H04L 5/1476 operating bitwise
• CPC Class Codes: H04L 5/1484 operating bytewise

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. An impulse radio transceiver for full duplex ultrawide-band communications, comprising:

an impulse radio transmitter that transmits first impulse radio signal pulses; and

an impulse radio receiver that receives second impulse radio signal pulses;

wherein one of said impulse radio transmitter and said impulse radio receiver is configured to synchronize said transmission of said first impulse radio signal pulses and said reception of said second impulse radio signal pulses for pulse interleaved communications to avoid self-interference between said transmitted first impulse radio signal pulses and said received second impulse radio signal pulses.

5. The transceiver according to claim 1, wherein said impulse radio signal pulses are electromagnetic.

6. The transceiver according to claim 1, wherein said impulse radio signal pulses are acoustic.

2. An impulse radio transceiver for full duplex ultrawide-band communications, comprising:

an impulse radio transmitter that transmits first bursts of impulse radio signal pulses; and

an impulse radio receiver that receives second bursts of impulse radio signal pulses;

wherein one of said impulse radio transmitter and said impulse radio receiver is configured to synchronize said transmission of said first bursts of impulse radio signal pulses and said reception of said second bursts of impulse radio signal pulses for burst interleaved communications to avoid interference between said transmitted first bursts of impulse radio signal pulses and said received second bursts of impulse radio signals pulses.

7. The transceiver according to claim 2, wherein said impulse radio signal pulses are electromagnetic.

8. The transceiver according to claim 2, wherein said impulse radio signal pulses are acoustic.

3. An impulse radio transceiver for full duplex ultrawide-band communications, comprising:

an impulse radio transmitter that transmits first impulse radio signal pulses at a first pulse repetition rate; and

an impulse radio receiver that receives second impulse radio signal pulses at a second pulse repetition rate, wherein said second pulse repetition rate is different than said first pulse repetition rate;

wherein one of said impulse radio transmitter and said impulse radio receiver is configured to synchronize said transmission of said first impulse radio signal pulses and said reception of said second impulse radio signal pulses to minimize interference between said transmitted first impulse radio signal pulses and said received second impulse radio signal pulses.

4. The transceiver according to claim 3, wherein the transceiver is configured to blank selected pulses of said received or transmitted impulse radio signal pulses to avoid interference.

9. The transceiver according to claim 3, wherein said impulse radio signal pulses are electromagnetic.

10. The transceiver according to claim 4, wherein said impulse radio signal pulses are acoustic.