DOI QR코드

DOI QR Code

Further Results on Performance of LDPC coded IM-OFDM-QOS System

  • Kim, Hyeongseok (Division of Electronics and Electronical Information Engineering, Korea Maritime and Ocean University) ;
  • Kim, Jeongchang (Division of Electronics and Electronical Information Engineering, Korea Maritime and Ocean University)
  • 투고 : 2019.10.01
  • 심사 : 2019.12.16
  • 발행 : 2019.12.30

초록

This paper describes a low-density parity-check (LDPC) coded index modulated orthogonal frequency division multiplexing with quasi-orthogonal sequence (IM-OFDM-QOS) and provides performance evaluations of the proposed system. By using QOS as the spreading code, IM-OFDM-QOS scheme can improve the reception performance than IM-OFDM-SS scheme for a given data rate. On the other hand, LDPC code is widely used to the latest wireless communication systems as forward error correction (FEC) scheme and has Shannon-limit approaching performance. Therefore, by applying LDPC code to IM-OFDM-QOS system as FEC scheme, the reception performance can be further improved. Simulation results show that significant signal-to-noise ratio (SNR) gains can be obtained for LDPC coded IM-OFDM-QOS system compared to the LDPC coded IM-OFDM-SS system and the SNR gain increases with the higher code rate.

키워드

참고문헌

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