Alice sends a 16-QAM symbol (i.e. 4 bits/symbol) to Bob through an AWGN channel. The noise variance is normalized to 1 . When the SNR is 20dB, Bob receives a noisy symbol 3.160+3.158j. Use the following Gray map (illustrated in Figure Q3(d)) to determine the corresponding transmitted information bits. Provide your reasoning Assume the variance of 16-QAM constellation is normalised to 1 . Figure Q3(d)