Training sequence inserted OFDM transmission with MMSE-FDE

Tetsuya Yamamoto, Fumiyuki Adachi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Orthogonal frequency division multiplexing (OFDM) has been attracting much attention because of its robustness against frequency selective fading. Instead of well-known cyclic prefix (CP) insertion, known training sequence (TS) insertion can be used for OFDM block transmission (called TS-OFDM). In this paper, we propose a new receiver design, which can obtain the frequency diversity gain through the use of frequencydomain equalization (FDE) for TS-OFDM. A conditional bit error rate (BER) analysis of the proposed FDE is presented. The average BER performance of the TS-OFDM signal transmission in a frequency-selective Rayleigh fading channel is evaluated by the Monte-Carlo numerical computation method using the derived conditional BER and is confirmed by computer simulation. Numerical and computer simulation results show the proposed TS-OFDM with FDE improves BER and throughput performance of TS-OFDM compared to the conventional TS-OFDM receiver due to the frequency diversity gain. It is also shown that the proposed TS-OFDM with FDE is more robust against imperfect channel estimation than the conventional TS-OFDM receiver.

Original languageEnglish
Pages (from-to)476-483
Number of pages8
JournalIEICE Transactions on Communications
Issue number2
Publication statusPublished - 2014


  • Frequency-domain equalization
  • OFDM
  • Training sequence


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