System for wireless serial transmission of encoded information

• US 6,198,783 B1
• Filed: 05/12/1998
• Issued: 03/06/2001
• Est. Priority Date: 03/12/1992
• Status: Expired due to Fees

• Current Assignee: NTP Incorporated
• Original Assignee: NTP Incorporated
• Inventors: Campana, Thomas J. Jr.
• Primary Examiner(s): Chin, Stephen
• Assistant Examiner(s): Ghayour, Mohammad
• Application Number:
  US09/076,158
• Time in Patent Office: 1,029 Days
• Field of Search: 375/346, 375/219, 375/238, 375/239, 375/261, 375/302, 332/103, 332/106, 332/109, 332/112, 332/144
• US Class Current: 375/346
• CPC Class Codes: H04B 7/10 Polarisation diversity; Directional diversity
• CPC Class Codes: H04L 1/004 by using forward error control H04L1/0618 takes precedence; coding, decoding or code conversion, for error detection or correction H03M13/00
• CPC Class Codes: H04L 1/02 by diversity reception
• CPC Class Codes: H04L 27/22 Demodulator circuits; Receiver circuits
• CPC Class Codes: H04L 7/042 Detectors therefor, e.g. correlators, state machines digital correlators in general G06F17/15
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems

Abstract

The present invention provides a method for transmission of serial information over a wireless channel. The method includes modulating bits of information at selected parts of each cycle of a carrier waveform. At the receiving side, the selected parts of each cycle of the modulated waveform are integrated to produce an integrated value and compared with stored value to recover transmitted bits.

Claims

1. A method of transmission of information on a wirelessly transmitted waveform comprising:

modulating bits of information at selected parts of each cycle of a plurality of cycles of the waveform;

wirelessly transmitting the modulated waveform;

receiving the modulated waveform;

integrating selected parts within each cycle of the received modulated waveform to produce an integrated value representative of each selected part; and

comparing the integrated values with at least one stored value to determine a value of the bits modulated on each cycle of the plurality of cycles.

2. A method in accordance with claim 1 wherein:

the waveform is analog.

3. A method in accordance with claim 2 wherein:

the waveform is a subcarrier.

4. A method in accordance with claim 1 wherein:

the bits are modulated on equally spaced constellations of each cycle of the waveform.

5. A method in accordance with claim 3 wherein:

the bits are modulated on equally spaced constellations of each cycle of the subcarrier.

6. A method in accordance with claim 1 wherein:

the waveform is pulse modulated.

7. A method in accordance with claim 6 wherein:

the pulse modulated waveform is a subcarrier.

8. A method in accordance with claim 6 wherein:

the waveform is pulse width modulated.

9. A method in accordance with claim 7 wherein:

the subcarrier is pulse width modulated.