International Conference on Instrumentation, Measurement, Circuits and Systems (ICIMCS 2011)
193 Performance of Multilevel Coded 16-QAM Scheme for SC-FDE Transmission Over Fading Channel
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During the past few years, single-carrier modulation (SCM) has again become an interesting and complementary alternative to OFDM system because of the implementations of frequency-domain equalization (FDE) with FFT/IFFT. The performance of SC-FDE system suffers severely by the time- and frequency-selective fading, hence, powerful forward error protect coding and modulation scheme are essential to the system. In this paper, we proposed a multilevel coding-modulation scheme based on convolutional codes and 16-QAM modulation for SC-FDE systems. The corresponding multistage decoding (MSD) algorithm is developed in this paper; system performance tests over AWGN and fading channel based on simulation indicate that the...