Abstract:

For a two-user layered Alamouti-coded multiple-input multiple-output （MIMO）system, the complexity of the maximum-likelihood decoding is high while full diversity is achieved. Using low-complexity partial interference cancellation (PIC) group decoding and its combination with successive interference cancellation (PIC-SIC) group decoding, one space-time coding scheme is proposed. Full diversity gain is proved to be achieved with the PIC-SIC group decoding by the analytical derivation of the symbol error rate. Simulation confirms the derivation and its better biterror rate performance over layered with the PIC and PIC-SIC group decoding.

Key words: layered Alamouti code, partial interference cancellation, successive interference cancellation, group decoding, multiple-input multiple-output systems