just a simple question....why in D8PSK is the gray coding and decoding
the following ?
*# -----------------------
# Do Gray code
# -----------------------
# binary to gray coding -- constellation does Gray coding
binary_to_gray = {
2 : range(2),
4 : [0,1,3,2],
8 : [0, 1, 3, 2, 7, 6, 4, 5]
#8 : [0, 1, 3, 2, 6, 7, 5, 4] <--------- why not this way in coding ?
}
# gray to binary
gray_to_binary = {
2 : range(2),
4 : [0,1,3,2],
8 : [0, 1, 3, 2, 6, 7, 5, 4]
}*
i was surprised to find a difference in *bynary_to_gray* and*
gray_to_binary* in mapping the eight symbols ! ! ! could you please
explain me the reason ?
thx in advance
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