Successive interference cancellation for 3G downlink: Algorithm and VLSI architecture

This paper presents a VLSI implementation of an MMSE successive interference cancellation multiuser detector (SIC-MUD) for the downlink of a TD-SCDMA system. Computation in the frequency domain, group-wise interference cancellation, and pre-computation of filter coefficients enable an efficient architecture suitable for mobile handsets. Our implementation in 0.13µm CMOS technology proves that the SIC-MUD is a viable solution for the TD-SCDMA downlink, providing a notable performance gain at a moderate increase in complexity compared to linear equalizers.