Abstract:

A method to get rid of the complexity redundancy within the fixedcomplexity sphere decoder is proposed, that can reduce the detection complexity greatly in the sense of average, therefore to decrease the power consuming. If the method is well constructed, the reduction of complexity redundancy will cause no loss of diversity order, that means optimal in high signal noise ratio regime. The simulation shows the effect of the method.

Key words: multiinput multioutput, sphere decoding, fixedcomplexity sphere decoder