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Method and apparatus for a simplified maximum likelihood demodulator for dual carrier modulation
Method and apparatus for a simplified maximum likelihood demodulator for dual carrier modulation
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机译:用于双载波调制的简化的最大似然解调器的方法和装置
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摘要
A novel method and apparatus for wireless communication systems for simplifying the maximum likelihood (ML) Dual Carrier Modulated (DCM) demodulation for received DCM signals over frequency selective channels are disclosed. The disclosed method and apparatus are based on the Minimum Euclidean Distance (MED) decoding, which is equivalent to the maximum likelihood (ML) decoding for a frequency-selective wireless channel with Additive White Gaussian Noise (AWGN). Compared to the traditional ML decoder, the disclosed method and apparatus reduce the hypothesis testing from that of a 16 Quadrature Amplitude Modulation (16 QAM) to that of a 4 QAM, or Quadrature Phase Shift Keying (QPSK). Thus computation and hardware complexity can be reduced.
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