Shannon Meets Nyquist: Capacity of Sampled Gaussian Channels

  title={Shannon Meets Nyquist: Capacity of Sampled Gaussian Channels},
  author={Yuxin Chen and Yonina C. Eldar and Andrea J. Goldsmith},
  journal={IEEE Transactions on Information Theory},
We explore two fundamental questions at the intersection of sampling theory and information theory: how channel capacity is affected by sampling below the channel's Nyquist rate, and what sub-Nyquist sampling strategy should be employed to maximize capacity. In particular, we derive the capacity of sampled analog channels for three prevalent sampling strategies: sampling with filtering, sampling with filter banks, and sampling with modulation and filter banks. These sampling mechanisms subsume… CONTINUE READING
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