Optimal maximum likelihood signal detection method and apparatus for MIMO system

摘要

An optimal maximum likelihood signal detection method and apparatus for a MIMO system are disclosed. An embodiment of the invention can provide an optimal signal detection method for a multiple-input multiple-output system that includes: determining the smallest metric of the final layer expanded from the candidate symbols of the i-th detection layer as the optimal threshold of the i-th detection layer; and selecting surviving candidate symbols from among the candidate symbols of the i-th detection layer by using the optimal threshold.

主权项

1. An optimal signal detection method for a multiple-input multiple-output system, the optimal signal detection method comprising:
determining a smallest metric of a final layer expanded from candidate symbols of an i-th detection layer as an optimal threshold of the i-th detection layer, wherein the determining of the smallest metric of the final layer comprises:
selecting a candidate symbol having a smallest metric from the i-th detection layer; andexpanding candidate branches of the candidate symbol to an (i+1)-th detection layer,wherein the expanding of the candidate branches is iteratively performed up to the final layer; and selecting a surviving candidate symbol from among the candidate symbols of the i-th detection layer by using the optimal threshold.