Eb/N0 Vs BER for BPSK over Rician and AWGN Channels using convolution coding ... and Analysis of Convolutional codes using matlab,-3 international journal of ... Figure 4: BER for BPSK in AWGN channel with cyclic code (7.4) A (n , k) linear code C is called a cyclic code if every cyclic shift of a code vector in c is also a code vector in C. This does not mean every code vector have the same weight. There are groups of code vectors with the same weight.