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

Yang-Han Lee; Yih-Guang Jan; Hsin Huang; Qiang Chen; Qiaowei Yuan; Kunio Sawaya

doi:10.1587/elex.8.1240

LETTER

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

Yang-Han Lee, Yih-Guang Jan, Hsin Huang, Qiang Chen, Qiaowei Yuan, Kunio Sawaya

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Keywords: array antenna, received power imbalance (RPI), turbo iterative receiver, low density parity check (LDPC), convolution code (CC)

JOURNAL FREE ACCESS

2011 Volume 8 Issue 15 Pages 1240-1244

DOI https://doi.org/10.1587/elex.8.1240

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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 -10dB to 0dB 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.

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