Golay-code generation

• US 8,527,853 B2
• Filed: 08/24/2010
• Issued: 09/03/2013
• Est. Priority Date: 11/16/2005
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Lakkis, Ismail
• Primary Examiner(s): CHAUDRY, MUJTABA M
• Application Number:
  US12/862,218
• Publication Number:
  US 20110209035A1
• Time in Patent Office: 1,106 Days
• Field of Search: 714/783, 714/758
• US Class Current: 714/783
• CPC Class Codes: H03M 13/1505 Golay Codes
• CPC Class Codes: H03M 13/611 Specific encoding aspects, e.g. encoding by means of decoding
• CPC Class Codes: H03M 13/618 Shortening and extension of codes

Abstract

A Golay-code generator configured for generating Golay complementary code pairs comprises a sequence of delay elements configured for providing a predetermined set of fixed delays to at least a first input signal and a sequence of adaptable seed vector insertion elements configured for multiplying at least a second input signal by a variable seed vector, wherein each of a plurality of seed vectors corresponds to at least one predetermined piconet. The Golay-code generator may further comprise multiplexers configured for switching inputs and outputs of at least two delay elements in the sequence of delay elements to produce a plurality of compatible delay vectors. The Golay-code generator may further comprise a code-truncation module configured to shorten the Golay complementary code pairs for producing a plurality of daughter codes. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the subject matter of the disclosure contained herein. This Abstract is submitted with the explicit understanding that it will not be used to interpret or to limit the scope or the meaning of the claims.

Claims

1. A spreading module configured for spreading symbols in a frame comprising a plurality of fields, the spreader comprising:

a Golay-code generator configured for generating a mother-code pair comprising a Golay-code pair,

a spreader configured for spreading each of the plurality of fields using a combination of codes in the mother-code pair.

2. The spreading module recited in claim 1, wherein the frame comprises a preamble, a header, and a packet payload.

3. A method of spreading symbols in a frame comprising a plurality of fields, comprising:

providing for generating a mother-code pair comprising a Golay-code pair,

providing for spreading each of the plurality of fields using a combination of codes in the mother-code pair.

4. The method recited in claim 3, wherein the frame comprises a preamble, a header, and a packet payload.

5. A computer program product for spreading symbols in a frame comprising a plurality of fields, comprising a computer-readable storage device having instructions executable to:

generate a mother-code pair comprising a Golay-code pair; and

spread each of the plurality of fields using a combination of codes in the mother-code pair.

6. The computer program product recited in claim 5, wherein the frame comprises a preamble, a header, and a packet payload.

7. An apparatus for spreading symbols in a frame comprising a plurality of fields, comprising:

means for generating a mother-code pair comprising a Golay-code pair; and

means for spreading each of the plurality of fields using a combination of codes in the mother-code pair.

8. The apparatus recited in claim 7, wherein the frame comprises a preamble, a header, and a packet payload.

9. An apparatus capable of spreading symbols in a frame comprising a plurality of fields, the apparatus comprising a processing system configured to:

generate a mother-code pair comprising a Golay-code pair; and

spread each of the plurality of fields using a combination of codes in the mother-code pair.

10. The apparatus recited in claim 9, wherein the frame comprises a preamble, a header, and a packet payload.

11. A wireless terminal, comprising:

a processing system configured to;

generate a mother-code pair comprising a Golay-code pair; and

spread each of a plurality of fields in a frame using a combination of codes in the mother-code pair; and

a transmitter configured to transmit the frame.