Reconfigurable Multi-Standard Uplink MIMO Receiver With Partial Interference Cancellation
As HSPA/HSPA+ and LTE/LTE-A evolve in parallel, the reconfigurability of a receiver to support multiple standards has become more and more important, especially for small cells. In this paper, the authors first suggest a reconfigurable multi-standard uplink MIMO receiver based on a frequency domain equalizer. Then, to improve the performance, they propose two low-complexity partial iterative Interference Cancellation (IC) schemes to deal with the residual inter-chip and inter-antenna interference in HSPA/HSPA+ and the residual inter-symbol and inter-antenna interference in LTE/LTE-A. Compared with a receiver consisting of separate HSPA/HSPA+ and LTE/LTE-A uplink receivers, this reconfigurable receiver can save up to 66.9% complexity.