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| 1. |
A communication channel with AWGN operating at a signal to noise ratio SNR >> 1 and bandwidth B has capacity C. If the SNR is doubled keeping B constant, the resulting capacity C is given by |
| Answer» C = B log2[1 + SNR] C = B log2[SNR] C' = B log2[2SNR] = B log2 SNR + B log22 C' = C1 + B. | |