EFFICIENT ML DETECTION FOR MIMO CHANNELS : ORDERED SPHERE DECODING

Key results: The Ordered Sphere Decoder (OSD) performs ML detection for MIMO channels at a greatly reduced computational cost, while also providing a competitive sub-optimal solution in fixed time. How does the work advance the state-of-the-art?: The OSD is evaluated against state-of-the-art works, demonstrating a dramatic complexity reduction, particularly in the important higher modulation order regimes. Motivation (problems addressed): The OSD is a new ML MIMO channel decoding proposal that addresses the issues of decoding complexity and delay over a wide range of operating regions.