OFDM系统级的仿真，里面涉及到卷积编码，交织，qpsk调制等-OFDM system-level simulation, which relates to convolutional coding, interleaving, qpsk modulation

QPSK调制下的（5,7）卷积码的编码和维特比译码与BPSK调制下（5,7）卷积码的编码和维特比译码的BER特性-QPSK modulation under (5,7) convolutional code encoding and Viterbi decoding and BPSK modulation (5,7) convolutional code encoding and Viterbi BER characteristic