Computationally Efficient Tree Searching-based Precording device and method in multiuser MIMO communication system

摘要

, based on low complexity vector putter Salvation in a multi-user multi-antenna communication system according to the invention pre-coding method is determining a reference value of the accumulated branch metrics of the candidate symbol ; Cumulative branch metric values for registering the entry of the determined candidate cumulative branch metrics of the branches of the candidate symbols stacked with removal of the candidate with the accumulated branch metric value exceeds the reference value does not exceed the reference value of the metric candidate symbols in the symbol ; And to include the step of selecting cumulative branch metric value of the smallest candidate symbol of the accumulated branch metric value registered in the entry candidate symbol while having a low complexity as compared with the techniques used in existing Sphere Encoding performance is a similar advantage there .