MIMO Decoder Precomputation Logic for Power Reduction

The patent applies preliminary action by precomputing distance metrics for the first stage of the M-algorithm before actual decoding operations. The distance computation unit calculates and stores distance metrics for all possible symbol sequences in the first stage, which are then reused during decoding. This precomputation eliminates redundant calculations during real-time operation, significantly reducing both decoding complexity and power consumption while maintaining accurate distance metric comparisons for symbol sequence selection.

The patent implements preliminary action by precomputing and storing distance metrics for the first stage symbol sequences before decoding operations begin. The distance computation unit calculates these metrics in advance and stores them in memory, allowing the decoder to rapidly retrieve and compare precomputed values during high-speed operation. This eliminates the need for repeated calculations during real-time decoding, enabling fast throughput while reducing power consumption by avoiding redundant computational operations.

The patent applies preliminary action by precomputing distance metrics for all first-stage symbol sequences and storing them for rapid retrieval. This precomputation ensures that accurate distance metrics are available without performing complete calculations during real-time decoding. The stored metrics maintain measurement precision while dramatically reducing processing time, as the decoder only needs to retrieve and compare precomputed values rather than recalculate them for each symbol sequence evaluation.