Trellis-Coded OFDM Signal Detection with Maximal Ratio Combining and Combined Equalization and Trellis Decoding

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概要

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• We propose an improved orthogonal frequency division multiplexing (OFDM) signal detector which uses the minimum mean-square error (MMSE) noise feedback equalization (NFE). The input bit stream is trellis-coded to form OFDM signal blocks and the maximal ratio combining (MRC) is adopted at the receiver in order to improve the performance of the detector. As a result, we obtain significantly improved detection performance compared with the conventional OFDM receivers as follows. Using the proposed MMSE-NFE in the receiver, we can obtain the performance gain of about 1.5 dB to 2 dB in symbol energy to noise power spectral density (E_s/N_o) for Doppler frequencies of f_d = 20 and 100 Hz, respectively, over the receiver with the MMSE linear equalization (LE) alone at symbol error rate (SER) of about 10^lt-3gt. With MRC and trellis coding, the performance gain of about 11 dB in E_s/N_o for f_d = 20 and 100 Hz at SER of about 10^lt-3gt is obtained.

• 一般社団法人電子情報通信学会の論文
• 1997-04-25

著者

• Lee Hwangsoo

  The Signal Processing Laboratory Dept.of Electrical Engineering Korea Advanced Institute Of Science

• Jwa J

  Korea Advanced Inst. Sci. And Technol. Seoul Kor

• Jwa Jeongwoo

  The Signal Processing Laboratory Korea Advanced Institute Of Science And Technology

• LEE SeongSik

  the Signal Processing Laboratory, Korea Advanced Institute of Science and Technology

関連論文

• Frequency and Phase Estimation for Single Sinusoid Using Cyclic Autocorrelation
• Performance of OFDM/MDPSK over Time-Variant Multipath Rayleigh Fading Channels
• Trellis-Coded OFDM Signal Detection with Maximal Ratio Combining and Combined Equalization and Trellis Decoding

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