Optimum ergodic power allocation for multiuser OFDM with arbitrary signal constellations

Angel Lozano; Antonia M. Tulino; Sergio Verdú

doi:10.1109/GLOCOM.2006.37

Optimum ergodic power allocation for multiuser OFDM with arbitrary signal constellations

Angel Lozano, Antonia M. Tulino, Sergio Verdú

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Scopus citations

Abstract

This paper formulates the power allocation policy that maximizes the region of ergodic mutual informations achievable in multiuser downlink OFDM channels known only statistically by the base station. Arbitrary partitioning of the available tones among users and arbitrary modulation formats, possibly different for every user, are considered. The derivation relies on the nexus between the mutual information of Gaussian channels and the minimum mean-square error incurred in the nonlinear estimation of the transmit constellation points given their noisy receive observations.

Original language	English (US)
Title of host publication	IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
DOIs	https://doi.org/10.1109/GLOCOM.2006.37
State	Published - Dec 1 2006
Event	IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference - San Francisco, CA, United States Duration: Nov 27 2006 → Dec 1 2006

Other

Other	IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
Country	United States
City	San Francisco, CA
Period	11/27/06 → 12/1/06

All Science Journal Classification (ASJC) codes

Engineering(all)

Access to Document

10.1109/GLOCOM.2006.37

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Lozano, A., Tulino, A. M., & Verdú, S. (2006). Optimum ergodic power allocation for multiuser OFDM with arbitrary signal constellations. In IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference [4150667] https://doi.org/10.1109/GLOCOM.2006.37

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abstract = "This paper formulates the power allocation policy that maximizes the region of ergodic mutual informations achievable in multiuser downlink OFDM channels known only statistically by the base station. Arbitrary partitioning of the available tones among users and arbitrary modulation formats, possibly different for every user, are considered. The derivation relies on the nexus between the mutual information of Gaussian channels and the minimum mean-square error incurred in the nonlinear estimation of the transmit constellation points given their noisy receive observations.",

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AB - This paper formulates the power allocation policy that maximizes the region of ergodic mutual informations achievable in multiuser downlink OFDM channels known only statistically by the base station. Arbitrary partitioning of the available tones among users and arbitrary modulation formats, possibly different for every user, are considered. The derivation relies on the nexus between the mutual information of Gaussian channels and the minimum mean-square error incurred in the nonlinear estimation of the transmit constellation points given their noisy receive observations.

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