Abstract: A system comprising communication logic capable of receiving data signals from a network. The signals comprise both erasure error and random error. The system also comprises processing logic coupled to the communication logic and adapted to partition parity check bytes of the received signals into a first portion and a second portion. The processing logic uses the first portion for random error correction and the second portion for erasure error correction.

Abstract: Systems and methods are disclosed for determining mitigating noise in multi-pair communication system. A receiver coordinated system can include an error estimator that estimates noise for a first line of a plurality lines and provides an error estimate for the first line. A noise predictor applies a predetermined cross-correlation value to the error estimate to provide a correlated noise term that describes noise cross-correlation between the first line and a second line of the plurality of lines. A noise decorrelation component applies the cross-correlated noise term to substantially decorrelate noise for the second line.

Abstract: A system comprising communication logic capable of receiving data signals from a network. The signals comprise both erasure error and random error. The system also comprises processing logic coupled to the communication logic and adapted to partition parity check bytes of the received signals into a first portion and a second portion. The processing logic uses the first portion for random error correction and the second portion for erasure error correction.

Abstract: Methods and apparatus to perform erasure forecasting in communication systems are disclosed. A disclosed example apparatus comprises a forward error correction (FEC) decoder to decode a first codeword and to provide a first error indication for the first codeword, an erasure forecaster to make an erasure decision for a second codeword based on the first error indication, and an erasure forecasting state table including a first field associated with first interleaved data and a second field associated with second interleaved data, the second codeword containing a first element from the first interleaved data and a second element from the second interleaved data.

Abstract: Systems and methods are disclosed for determining mitigating noise in multi-pair communication system. A receiver coordinated system can include an error estimator that estimates noise for a first line of a plurality lines and provides an error estimate for the first line. A noise predictor applies a predetermined cross-correlation value to the error estimate to provide a correlated noise term that describes noise cross-correlation between the first line and a second line of the plurality of lines. A noise decorrelation component applies the cross-correlated noise term to substantially decorrelate noise for the second line.

Abstract: A multiple port digital subscriber line (DSL) modem for effecting DSL communications over bonded twisted-pair wire facilities is disclosed. The frame boundaries of DSL frames communicated by the modem from its ports are synchronized in time during DSL initialization by controlling the frame at which cyclic affices are appended. The cyclic affix has a known length, and the time delays among the various ports are known. Adjustment at the frame at which the cyclic affix is first applied can be accomplished by controlling the number of frames transmitted without the cyclic affix prior to the point of appending cyclic affices, according to the relative delay among the ports. Because the cyclic affix has a length that is a fraction of a frame, the relative frame timing can be adjusted by this fraction in this manner.