210 research outputs found
Pre-configured Error Pattern Ordered Statistics Decoding for CRC-Polar Codes
In this paper, we propose a pre-configured error pattern ordered statistics
decoding (PEPOSD) algorithm and discuss its application to short cyclic
redundancy check (CRC)-polar codes. Unlike the traditional OSD that changes the
most reliable independent symbols, we regard the decoding process as testing
the error patterns, like guessing random additive noise decoding (GRAND). Also,
the pre-configurator referred from ordered reliability bits (ORB) GRAND can
better control the range and testing order of EPs. Offline-online structure can
accelerate the decoding process. Additionally, we also introduce two orders to
optimize the search order for testing EPs. Compared with CRC-aided OSD and list
decoding, PEPOSD can achieve a better trade-off between accuracy and
complexity
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