Apparatus and method for cancelling interference in communication system supporting multi-user multiple-input multiple-output scheme

A signal receiving apparatus in a communication system supporting a multi-user Multiple-Input Multiple-Output (M IMO) scheme, the signal receiving apparatus comprising:

• a receiver;
• and
• a controller configured to:
• determine, while performing a signal detecting operation, that an error prediction scheme criterion is satisfied by an error of a transmitted signal, which is detected without considering an interference signal, being less than an error of a transmitted signal, which is detected by considering the interference signal;
• and
• perform the signal detecting operation using the interference cancellation scheme in response to determining that the error prediction scheme criterion is satisfied,
• wherein the error of the transmitted signal, which is detected without considering the interference signal, is determined based one of:
• an estimated pre-coding matrix, a channel matrix, a symbol vector that is transmitted from a signal transmitting apparatus, and a received signal,
• the estimated pre-coding matrix, the channel matrix, the symbol vector that is transmitted from the signal transmitting apparatus, and an estimated transmitted symbol vector,
• a Singular Value Decomposition (SVD) value of the channel matrix and a minimum distance between two points on a constellation of a transmitted symbol, and
• the channel matrix and the minimum distance between the two points on the constellation of the transmitted symbol.