Read channel sampling utilizing two quantization modules for increased sample bit width

摘要

A communication channel structure and a decoding method supported by such a communication channel structure are disclosed. Such a communication channel includes a digital filter configured for filtering an input signal and two quantizer configured for quantizing the filtered signal. A first quantizer is utilized to quantize the filtered signal to produce a first quantized sample having a first precision and a second quantizer is utilized to quantize the filtered signal to produce a second quantized sample having a second precision, wherein the second precision is different from the first precision. The communication channel also includes an iterative decoder configured for utilizing the first quantized sample for a first global iteration of a decoding process and utilizing the second quantized sample for at least one subsequent global iteration of the decoding process.

主权项

1. A communication channel, comprising:
a digital filter configured for filtering an input signal; a first quantizer configured for quantizing the filtered signal to produce a first quantized sample having a first precision; a second quantizer configured for quantizing the filtered signal to produce a second quantized sample having a second precision, wherein the second precision is different from the first precision; and an iterative decoder configured for utilizing the first quantized sample for a first global iteration of a decoding process and utilizing the second quantized sample for at least one subsequent global iteration of the decoding process.