The Capacity Loss of Dense Constellations
arXiv:1205.5522 · doi:10.1109/ISIT.2012.6283482
Abstract
We determine the loss in capacity incurred by using signal constellations with a bounded support over general complex-valued additive-noise channels for suitably high signal-to-noise ratio. Our expression for the capacity loss recovers the power loss of 1.53dB for square signal constellations.
To appear in the Proceedings of the 2012 IEEE International Symposium on Information Theory (ISIT). Corrected a minor error in Figure 1