基于Visual C++下的BPSK信号的调制和解调，中间有扩频部分-Based on Visual C++ signal under BPSK modulation and demodulation, spread-spectrum part of the middle

Assume that a direct sequence spread spectrum system uses the Barker code of length 7 (N=7) as its spreading sequence. a. Randomly generate 8 symbols (d0~d7) from the set {+1,-1}. b. If each chip of the Barker code is denoted as cj, j=0~6, spread

spread spectrum techniques(walsh,barker and m-sequence)