System for wireless transmission and receiving of information and method of operation thereof

• US 6,272,190 B1
• Filed: 02/10/1998
• Issued: 08/07/2001
• 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): Ha, Dac V.
• Application Number:
  US09/021,380
• Time in Patent Office: 1,274 Days
• Field of Search: 375/347, 455/52.1, 455/52.2, 455/52.3, 455/65, 455/101, 455/272, 455/273, 455/132, 455/278.1, 455/296
• US Class Current: 375/347
• 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 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like

Abstract

The invention is a method of data transmission. The method includes transmitting a first data transmission and a time delayed second data transmission which is identical to the first data transmission with the data transmissions modulating a subcarrier and each containing error correction code; receiving the first and second data transmissions; processing the the received first and second data transmissions to identify, by use of the error correction code, erroneous data within at least one of the first and second data transmissions; and replacing the identified erroneous data with non-erroneous data, which corresponds to the erroneous data from another of the first and second transmissions not containing the erroneous data, to produce a received data transmission not containing any erroneous data which is identical to the transmitted first and second data transmissions.

Claims

1. A method of data transmission comprising:

transmitting a first data transmission and a time delayed second data transmission which is identical to the first data transmission with the data transmissions modulating a subcarrier and each containing error correction code;

receiving the first and second data transmissions;

processing the received first and second data transmissions to identify by use of the error correction code erroneous data within at least one of the first and second data transmissions; and

replacing the identified erroneous data with non-erroneous data, which corresponds to the erroneous data from another of the first and second transmissions not containing the erroneous data, to produce a received data transmission not containing any erroneous data which is identical to the transmitted first and second data transmissions.

2. A method in accordance with claim 1 wherein:

the time delay is equal to or greater than any statistically improbable fade.

3. A method in accordance with claim 2 wherein:

the subcarrier is analog and the data transmissions are synchronized on the subcarrier.

4. A method in accordance with claim 2 wherein:

the subcarrier is digital and the data transmissions are synchronized on the subcarrier.

5. A method in accordance with claim 1 wherein:

the subcarrier is analog and the data transmissions are synchronized on the subcarrier.

6. A method in accordance with claim 1 wherein:

the subcarrier is digital and the data transmissions are synchronized on the subcarrier.