A method of decoding low-density parity-check codes comprises a first step that includes
calculating└└ rR ml, for each parity check equation, at iteration i− 1, in response to a third …

Methods and apparatus for encoding codewords which are particularly well Suited for use
with low density parity check (LDPC) codes and long codewords are described. The …

(57) ABSTRACT A flexible and relatively hardware efficient LDPC encoder is described. The
encoder can be implemented with a level of parallelism which is less than the full parallelism …

A CPAP device includes a humidifier including humidifier tub having a heat conducting base
plate; and a cradle to support the humidifier tub in an operative position. The cradle may …

Methods and apparatus for decoding codewords using mes sage passing decoding
techniques which are particularly well suited for use with low density parity check (LDPC) …

Techniques for implementing message passing decoders, eg, LDPC decoders, are
described. To facilitate hardware implementation messages are quantized to integer …

An iterative message passing decoder, eg, an LDPC decoder, operating in conjunction with
a soft input-soft output signal processing unit, eg, an ISI detector, has an error floor …

Methods and apparatus of the present invention can be used to implement a
communications system wherein different devices using the same LDPC code can be …

An iterative message passing decoder, eg, an LDPC decoder, operating in conjunction with
a soft input-soft output signal processing unit, eg, an ISI detector, has an error floor per …

The present invention relates to decoding of data packets received from a transmission
channel, and, in particular, to an iterative decoder employing equalization of data packets. 2 …