Disclosed in the present invention are a QR decomposition-based detection method and apparatus based on overlapped multiplexing. The QR decomposition-based detection method comprises: step S1, obtaining a receiving sequence, wherein the receiving sequence is a sequence obtained after an input signal is encoded and modulated according to a multiplex waveform matrix and then the signal passes through a Gaussian channel; step S2, detecting the receiving sequence by using a QR decomposition algorithm, wherein step S2 comprises: decomposing a predicted multiplex waveform matrix into a unitary matrix and an upper triangular matrix; performing matrix multiplication on the receiving sequence according to the unitary matrix to obtain a data sequence; and detecting the data sequence layer by layer according to the data sequence, the upper triangular matrix, and a quantitative decision factor. According to the present invention, by using the encoding characteristics of an OvXDM system, a received signal is decoded correspondingly in combination with QR decomposition-based detection, thereby reducing the decoding complexity of the OvXDM system.

Qr decomposition-based detection method and apparatus

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Qr decomposition-based detection method and apparatus