METHOD AND DEVICE FOR OPTIMALLY AND SUB-OPTIMALLY DEMODULATING CONSTANT-AMPLITUDE MULTI-CODE BIORTHOGONAL MODULATION SIGNALS USING BLOCK ORTHOGONAL EXTENDED TRANSORTHOGONAL CODES

摘要

The invention 2 ^N of which relates to a block orthogonal expansion optimal and sub-optimal demodulation methods Amplitude Multi-codes binary orthogonal modulation signal using the transorthogonal code, the optimal demodulation method according to the invention corresponding to the combination of the N-bit information data, Any step of calculating a similar transorthogonal code and the correlation value of the modulated signal; Select the maximum value from among the 2 ^N correlation values calculated by the correlation step, and a maximum value selection stage which determines the information data of N bits corresponding to the modulated signal from similar transorthogoanl code corresponding to the maximum value. ; Waveform coding, orthogonal codes, Walsh codes, Hadamard matrix, constant amplitude coding, transorthogonal code, block code, orthogonal extension transorthogonal, the optimum demodulation, sub-optimal demodulation