Using turbo iterative receiver to mitigate RPI effect in MIMO OFDM communication system

Abstract

Abstract:The received power imbalance (RPI) effect exists in multiple antennas wireless communications system due to design flaw, operator's negligence etc. The range of RPI can be from −10 dB to 0 dB and if the RPI information is not available at the receiver terminal, it can implement turbo iterative receiver by concatenating multi-input and multi-output (MIMO) orthogonal frequency division multiplexing (OFDM) demodulation (MIMO OFDM demodulation, MOD) serially by channel decoder such as low density parity check (LDPC) decoder or Convolution code (CC) decoder to mitigate the RPI effect and to maintain the system performance at certain acceptable level. Keywords: array antenna, received power imbalance (RPI), turbo iterative receiver, low density parity check (LDPC), convolution code (CC) Classification: Microwave and millimeter wave devices, circuits, and systems References[1] B. Lu, G. Yue, and X. Wang, "Performance analysis and design optimization of LDPC-coded MIMO OFDM systems,"