ofdm.zip

% 解映射 function demodulated_symbols = demap_symbols(serialData, modulation) threshold = 0; switch modulation %BPSK解映射 它将接收到的符号映射到 [0, 1] 范围内， case 'BPSK' demodulated_symbols = pskdemod(serialData, 2); %QPSK解映射，对于 QPSK，它使用复数的 QPSK 星座图进行解映射，通过比较接收到的符号与星座点的距离来确定最近的星座点 case 'QPSK' mapped_data = pskdemod(serialData, 4); demodulated_symbols = mapped_data > threshold; case '16QAM' demodulated_bits = qamdemod(serialData, 16); demodulated_symbols = demodulated_bits > threshold; case '64QAM' demodulated_bits = qamdemod(serialData, 64); demodulated_symbols = demodulated_bits > threshold; otherwise error('未知的映射方式'); end end