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Signed-off-by: Chuck Ketcham <[email protected]>
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libs/qec/lib/decoders/sliding_window.h

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@@ -13,11 +13,12 @@
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namespace cudaq::qec {
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/// @brief A sliding window decoder that processes syndromes in overlapping windows
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///
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/// This decoder divides the syndrome stream into overlapping windows and decodes each
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/// window independently using an inner decoder. It's designed for low-latency decoding
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/// of streaming syndrome data.
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/// @brief A sliding window decoder that processes syndromes in overlapping
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/// windows
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///
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/// This decoder divides the syndrome stream into overlapping windows and
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/// decodes each window independently using an inner decoder. It's designed for
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/// low-latency decoding of streaming syndrome data.
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class sliding_window : public decoder {
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private:
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// --- Input parameters ---
@@ -80,29 +81,32 @@ class sliding_window : public decoder {
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/// @brief Validate constructor inputs
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void validate_inputs();
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/// @brief Initialize the window
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/// @param num_syndromes The number of syndromes to initialize the window for
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void initialize_window(std::size_t num_syndromes);
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/// @brief Add a single syndrome to the rolling window (circular buffer)
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void add_syndrome_to_rolling_window(const std::vector<float_t> &syndrome,
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std::size_t syndrome_index,
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bool update_next_write_index = true);
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std::size_t syndrome_index,
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bool update_next_write_index = true);
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/// @brief Add a batch of syndromes to the rolling window (circular buffer)
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void add_syndromes_to_rolling_window(
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const std::vector<std::vector<float_t>> &syndromes);
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/// @brief Get a single syndrome from the rolling window (unwrapping circular buffer)
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std::vector<float_t> get_syndrome_from_rolling_window(std::size_t syndrome_index);
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/// @brief Get a batch of syndromes from the rolling window (unwrapping circular buffer)
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/// @brief Get a single syndrome from the rolling window (unwrapping circular
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/// buffer)
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std::vector<float_t>
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get_syndrome_from_rolling_window(std::size_t syndrome_index);
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/// @brief Get a batch of syndromes from the rolling window (unwrapping
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/// circular buffer)
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std::vector<std::vector<float_t>> get_syndromes_from_rolling_window();
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/// @brief Update the read index for the rolling window
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void update_rw_next_read_index();
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/// @brief Decode a single window (internal helper)
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void decode_window();
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@@ -127,7 +131,8 @@ class sliding_window : public decoder {
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/// @brief Decode multiple syndromes in batch
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/// @param syndromes Multiple syndrome measurements to decode
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/// @return The decoded error corrections
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std::vector<decoder_result> decode_batch(const std::vector<std::vector<float_t>> &syndromes) override;
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std::vector<decoder_result>
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decode_batch(const std::vector<std::vector<float_t>> &syndromes) override;
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/// @brief Get the number of syndromes per round
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/// @return The number of syndromes measured in each round
@@ -146,4 +151,3 @@ class sliding_window : public decoder {
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};
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} // namespace cudaq::qec
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