Andrew Dow is a notable inventor based in Edinburgh, GB. He has made significant contributions to the field of low-density parity-check (LDPC) codes, holding a total of 6 patents. His work focuses on enhancing decoder circuits and improving the efficiency of data processing.

Latest Patents

One of his latest patents is titled "Sub-matrix reduction for quasi-cyclic LDPC codes." This invention involves a decoder circuit that receives a first codeword encoded based on a quasi-cyclic low-density parity-check (QC LDPC) code. The first codeword includes a sequence of data arranged according to an order of columns in a first parity-check matrix associated with the QC LDPC code. A codeword reordering stage generates a reordered codeword by changing the sequence of the data in the first codeword based on the size of one or more circulant submatrices in the first parity-check matrix. An LDPC decoder then generates a decoded codeword by decoding the reordered codeword based on a second parity-check matrix associated with the QC LDPC code. In some implementations, the second parity-check matrix may comprise a plurality of second circulant submatrices of a different size than the first circulant submatrices.

Another significant patent is "Low-density parity check decoder using encoded no-operation instructions." This invention features LDPC decoder circuitry configured to decode an input codeword using a plurality of circulant matrices of a parity check matrix for an LDPC code. Multiple memory banks are configured to store elements of the input codeword, while a memory circuit is designed for the storage of an instruction sequence. Each instruction describes for one of the circulant matrices a corresponding layer and column of the parity check matrix and a rotation. The bundler circuit assembles the number of instructions from the memory circuit in a bundle and specifies one or more no-operation codes (NOPs) in the bundle in response to the value of the packing factor bits.

Career Highlights

Andrew Dow is currently employed at Xilinx, Inc., where he continues to innovate in the field of digital circuit design. His work has had a profound impact on the efficiency and performance of LDPC decoders.

Collaborations

He has collaborated with notable colleagues, including Richard Lewis Walke and Andrew M Whyte, contributing to various projects and advancements in technology.

Conclusion

This text is generated by artificial intelligence and may not be accurate.

Please report any incorrect information to support@idiyas.com