Question: Gray code The property of the Gray code is that the code words of adjacent symbols only differ in one bit. For example, the code

Gray code The property of the Gray code is that the code words of adjacent symbols only differ in one bit. For example, the code words of 8-PAM symbols are as illustrated in Figure 6.21. This results in a minimum expected number of bit errors per symbol error, in conditions of low symbol error probability. Devise a Gray code for 16-QAM symbols.

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