@inproceedings{396e681b1f4d4f98b5e536dfbb2782cc,
title = "Replica analysis of large-system CDMA",
abstract = "We present some new results on large-system CDMA obtained through the replica method developed in statistical physics. We find the spectral efficiency of randomly spread CDMA subject to Gaussian noise and flat fading in the large-system limit under arbitrary input distributions. Both joint decoding and single-user decoding are considered. In the latter case, a conditional mean estimator is first applied to separate the users and it is found that the resulting single-user channel for every user is equivalent to a Gaussian channel. The multiuser efficiency of that Gaussian channel is the same for all users and satisfies a fixed-point equilibrium equation. The additive decomposition by Shamai-Verdu of optimum capacity in terms of single-user capacity is shown to hold for arbitrary input distributions.",
author = "D. Guo and S. Verdu",
note = "Publisher Copyright: {\textcopyright} 2003 IEEE.; 2003 IEEE Information Theory Workshop, ITW 2003 ; Conference date: 31-03-2003 Through 04-04-2003",
year = "2003",
doi = "10.1109/ITW.2003.1216685",
language = "English (US)",
series = "Proceedings - 2003 IEEE Information Theory Workshop, ITW 2003",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "22--25",
booktitle = "Proceedings - 2003 IEEE Information Theory Workshop, ITW 2003",
address = "United States",
}