Device and method for encoding bits to symbols for a communication system

• US 9,548,864 B2
• Filed: 08/13/2015
• Issued: 01/17/2017
• Est. Priority Date: 10/12/2011
• Status: Active Grant

• Current Assignee: NXP B.V. (NXP Semiconductors NV)
• Original Assignee: NXP B.V. (NXP Semiconductors NV)
• Inventors: Pandey, Sujan, Deb, Abhijit Kumar, Vermeulen, Hubertus Gerardus Hendrikus
• Primary Examiner(s): Wong, Linda
• Application Number:
  US14/825,790
• Publication Number:
  US 20150349956A1
• Time in Patent Office: 523 Days
• Field of Search: 375/219, 375/220, 375/221, 375/222, 37524026-24028, 375/285, 375/284, 375/295, 375/296, 375/316, 455/67.13, 455/67.11, 455/702, 455/703, 455/71, 455/63.1, 455/91, 455/114.2, 455/115.1
• US Class Current: 1/1
• CPC Class Codes: A43C 11/165 characterised by a spool, reel or pulley for winding up cables, laces or straps by rotation
• CPC Class Codes: H04L 25/4908 using mBnB codes
• CPC Class Codes: H04L 25/4923 using ternary codes H04L25/4927 takes precedence
• CPC Class Codes: H04L 5/1423 for simultaneous baseband signals
• CPC Class Codes: Y10T 24/2183 Ski, boot, and shoe fasteners

Abstract

A device and method for encoding bits to symbols for a communication system are described. In one embodiment, a method for encoding bits to symbols for a communication system includes receiving a set of N-bit data to be transmitted, where N is an integer, generating side scrambling values using a polynomial, scrambling the set of N-bit data using the side scrambling values to produce scrambled data, mapping the scrambled data to a particular set of M symbols from a plurality of sets of M symbols, where M is an integer and M is smaller than N, and outputting the particular set of M symbols for transmission over a transmission medium. Other embodiments are also described.

Claims

1. A method for encoding bits to symbols for a communication system, the method comprising:

concatenating a bit to a set of data to generate a set of N-bit data to be transmitted, where N is an integer, and wherein the bit is a single bit from a next set of data that arrives after the set of data;

generating side scrambling values using a polynomial;

scrambling the set of N-bit data using the side scrambling values to produce scrambled data;

mapping the scrambled data to generate a particular set of M symbols from a plurality of sets of M symbols, where M is an integer; and

outputting the particular set of M symbols for transmission over a transmission medium.

2. The method of claim 1, wherein said M is six, and wherein the mapping includes mapping the scrambled data to a particular set of six symbols from a plurality of sets of six symbols.

3. The method of claim 1, wherein said generating includes generating the side scrambling values using a polynomial of g_m(x) =1+X¹³+X³³ or g_s(x) =1+x²⁰+x³³, where g_m(x) is a master scrambler polynomial and g_s(x) is a slave scrambler polynomial.

4. The method of claim 1, further comprising shuffling the polarity of the particular set of M symbols using states of the side scrambling values.

5. The method of claim 1, further comprising multiplexing the particular set of M symbols to a single output line so that the particular set of M symbols can be serially transmitted over the transmission medium.

6. The method of claim 4, wherein the transmission medium includes an unshielded twisted pair (UTP) cable.

7. The method of claim 1, further comprising receiving the set of data on four parallel signal lines from a media independence interface (MII).

17. The method of claim 1, wherein generating the side scrambling values comprises generating the side scrambling values using a linear feedback shift register (LFSR).

8. A device comprising:

a bit conversion module configured to concatenate a bit to a set of data to generate a set of N-bit data to be transmitted, where N is an integer, and wherein the bit is a single bit from a next set of data that arrives after the set of data;

a side scrambler module configured to generate side scrambling values using a polynomial;

a data scrambler module configured to scramble the set of N-bit data to be transmitted using the side scrambling values from the side scrambler module to produce scrambled data; and

a symbol generation module configured to map the scrambled data to generate a particular set of M symbols from a plurality of sets of M symbols, where M is an integer, the particular set of M symbols being symbols to be transmitted over a transmission medium.

9. The device of claim 8, wherein said M is six, and wherein the symbol generation module is configured to map the scrambled data to a particular set of six symbols from a plurality of sets of six symbols.

10. The device of claim 8, wherein the side scrambler module is configured to generate the side scrambling values using a polynomial of g_m(x) =1+x¹³+x³³or g_s(x) =1+x²⁰+x³³, where g_m(x) is a master scrambler polynomial and g_s(x) is a slave scrambler polynomial.

11. The device of claim 8, further comprising a symbol shuffling module configured to output values using states of the side scrambling values for symbol polarity shuffling.

12. The device of claim 8, further comprising a multiplexer configured to multiplex the particular set of M symbols to a single output line so that the particular set of M symbols can be serially transmitted over the transmission medium.

13. The device of claim 8, wherein the transmission medium includes an unshielded twisted pair (UTP) cable.

14. A method for encoding bits to symbols for a communication system, the method comprising:

concatenating a bit to a byte of data to be transmitted to produce a nine-bit data, wherein the bit is a single bit from a next byte of data that arrives after the byte of data;

generating nine scrambling values using a polynomial;

scrambling the nine-bit data using the nine side scrambling values to produce a nine-bit scrambled data;

mapping the nine-bit scrambled data to generate a particular set of six symbols from a plurality of sets of six symbols; and

outputting the particular set of six symbols for transmission over a transmission medium.

15. The method of claim 14, further comprising multiplexing the particular set of six symbols to a single output line so that the particular set of six symbols can be serially transmitted over the transmission medium.

16. The method of claim 14, further comprising shuffling the polarity of the particular set of six symbols using states of the side scrambling values.