Analog iterative decoder with early-termination
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United States of America Patent
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Oct 16, 2012
Grant Date -
Nov 4, 2010
app pub date -
Apr 29, 2009
filing date -
Apr 29, 2009
priority date (Note) -
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Abstract
An iterative decoder comprising a transconductance amplifier, a sampler, a Min-Sum decoder, and an early determination module is provided. The transconductance amplifier outputs a current proportional to the voltage of the coded bit stream. The sampler converts the amplified current into a plurality of currents and stores the sampled currents in a plurality of buffers. The Min-Sum decoder receives parallel currents, wherein currents represent the message of each variable node. The Min-Sum decoder exchanges the message of variable nodes and check nodes iteratively and outputs a set of decode codewords according to the possibilities. The early terminating module stops the iterative decoding when the decoded codeword converged.
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