SPREAD-SPECTRUM TRANSCEIVER

• US 20080069186A1
• Filed: 09/07/2006
• Published: 03/20/2008
• Est. Priority Date: 09/27/1991
• Status: Active Grant

• Current Assignee: CommWorks Solutions, LLC (IP Investments Group LLC)
• Original Assignee: Intellectual Ventures I LLC (Intellectual Ventures LLC)
• Inventors: Rice, Bart F.
• Granted Patent: US 7,924,906 B2
• Time in Patent Office: Days
• US Class Current: 375/146
• CPC Class Codes: H04B 1/707 using direct sequence modulation
• CPC Class Codes: H04B 1/7075 with code phase acquisition
• CPC Class Codes: H04J 13/00 Code division multiplex systems for frequency hopping H04B1/713
• CPC Class Codes: H04J 13/0074 Code shifting or hopping
• CPC Class Codes: H04J 13/0077 Multicode, e.g. multiple codes assigned to one user
• CPC Class Codes: H04J 13/10 Code generation
• CPC Class Codes: H04J 13/102 Combining codes
• CPC Class Codes: H04J 13/16 Code allocation

Abstract

An assembly of simultaneously transmitted electrically generated signals, which contains a subset of binary spreading-code sequences that are members of a large set of binary spreading-code sequences available to a particular node of a multi-node communication network. All sequences in the set of spreading-code sequences available to the particular node of the network can be generated by the same configurations of two linear feedback binary shift registers, where feedback taps of the two linear-feedback binary shift registers correspond to primitive polynomials of the same degree GF(2), the field of two elements.

Claims

1. (canceled)

2. A method comprising:

determining, from a signal received at a receiving node of a multi-node communications network, a particular subset of a set of spreading code sequences likely to have been transmitted by a transmitting node of the multi-node communications network;

said spreading code sequence for spreading at least one bit of information;

said sequence being selected from a set of sequences, wherein said sequence is changed at various intervals.

3. An apparatus comprising:

a unit;

said unit being adapted to determine, from a signal received at a receiving node of a multi-node communications network, a particular subset of a set of spreading code sequences likely to have been transmitted by a transmitting node of the multi-node communications network;

said spreading code sequence for spreading at least one bit of information;

said sequence to be selected from a set of sequences, wherein said sequence is to be changed at various intervals.