Methods and systems for improving iterative signal processing

摘要

A method for iteratively decoding a set of encoded samples received from a transmission channel is provided. A data signal indicative of a noise level of the transmission channel is received. A scaling factor is then determined in dependence upon the data signal and the encoded samples are scaled using the scaling factor. The scaled encoded samples are then iteratively decoded. Furthermore, a method for initializing edge memories is provided. During an initialization phase initialization symbols are received from a node of a logic circuitry and stored in a respective edge memory. The initialization phase is terminated when the received symbols occupy a predetermined portion of the edge memory. An iterative process is executed using the logic circuitry storing output symbols received from the node in the edge memory and a symbol is retrieved from the edge memory and provided as output symbol of the node. Yet further an architecture for a high degree variable node is provided. A plurality of sub nodes forms a variable node for performing an equality function in an iterative decoding process. Internal memory is interposed between the sub nodes such that the internal memory is connected to an output port of a respective sub node and to an input port of a following sub node, the internal memory for providing a chosen symbol if a respective sub node is in a hold state, and wherein at least two sub nodes share a same internal memory.

主权项

1. A method comprising:
receiving one of a pseudo random number and a random number; receiving an input symbol of a stochastic signal data stream; determining, by a decoder, a following probability of the stochastic signal data stream in dependence upon the input symbol and a present probability of the stochastic data stream; determining, by the decoder, an output symbol of the stochastic signal data stream in dependence upon a comparison of the following probability of the stochastic signal data stream with the received one of a pseudo random number and a random number; and providing, by the decoder, the output symbol.