20240022334. MULTI-LENGTH LOOK-UP TABLE SPHERICAL CONSTELLATION SHAPING simplified abstract (Infinera Corporation)

From WikiPatents
Jump to navigation Jump to search

MULTI-LENGTH LOOK-UP TABLE SPHERICAL CONSTELLATION SHAPING

Organization Name

Infinera Corporation

Inventor(s)

David S. Millar of San Jose CA (US)

Mehdi Torbatian of Ottawa (CA)

Han Henry Sun of San Jose (US)

MULTI-LENGTH LOOK-UP TABLE SPHERICAL CONSTELLATION SHAPING - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240022334 titled 'MULTI-LENGTH LOOK-UP TABLE SPHERICAL CONSTELLATION SHAPING

Simplified Explanation

The abstract of this patent application describes an encoder circuit for an optical fiber link that converts a sequence of input bits into a sequence of symbols of a codeword. The symbols of the codeword define a predetermined transmission probability distribution. The input bit sequence is divided into subgroups, and each subgroup is used as an address to access a look-up table. The contents of the memory location addressed by each subgroup of bits are output as a corresponding portion of the codeword. The codeword portions are then assembled in a buffer and output to forward error correction circuitry. The contents of the look-up tables are determined based on a sphere constellation shaping.

  • An encoder circuit is provided for an optical fiber link.
  • The circuit maps an input sequence of bits to a sequence of symbols of a codeword.
  • The symbols of the codeword define a predetermined transmission probability distribution.
  • The input bit sequence is divided into subgroups.
  • Each subgroup is used as an address to access a look-up table.
  • The contents of the memory location addressed by each subgroup are output as a corresponding portion of the codeword.
  • The codeword portions are assembled in a buffer and output to forward error correction circuitry.
  • The contents of the look-up tables are determined based on a sphere constellation shaping.

Potential applications of this technology:

  • Optical fiber communication systems
  • Data transmission in high-speed networks
  • Error correction in digital communication

Problems solved by this technology:

  • Efficient encoding of input bit sequences into codewords
  • Achieving a predetermined transmission probability distribution
  • Error correction in data transmission

Benefits of this technology:

  • Improved data transmission reliability
  • Higher data transfer rates
  • Reduced error rates in communication systems


Original Abstract Submitted

consistent with the present disclosure, an encoder circuit is provided at a transmit side of an optical fiber link that maps an input sequence of bits of fixed length k to a sequence of symbols of a codeword of length n, such that the symbols of the codeword define a predetermined transmission probability distribution. in one example, each subgroup of bits of the k input bit sequence is provided to a respective look-up table, whereby the sub-group of bits constitutes an address of a particular memory location in the corresponding look-up table. based on the address, the contents at the particular memory location addressed by each subgroup of bits are output as a corresponding portion of a codeword. each such codeword portion is provided to a further memory or buffer, such that the entire codeword is assembled in the buffer and output to forward error correction (fec) circuitry. in a further example, the contents of each memory location of each look-up table is determined based on a sphere constellation shaping.

Retrieved from "http://wikipatents.org/index.php?title=20240022334._MULTI-LENGTH_LOOK-UP_TABLE_SPHERICAL_CONSTELLATION_SHAPING_simplified_abstract_(Infinera_Corporation)&oldid=28742"