Asymptotic capacity of static multiuser channels with an unknown number of users

We examine a multiple-access communication system in which multiuser detection is performed without knowledge of the number of active interferers. Using a statistical-physics approach, we compute the single-user channel capacity and spectral efficiency in the large-system limit.

Comunicació presentada al 11th International Symposium on Wireless Personal Multimedia Communications (WPMC '08), celebrat els dies 8, 9, 10 i 11 de setembre de 2008 a Lapland, Finlàndia, i organitzat pel Centre for Wireless Communications i el National Institute of Information and Communications Technology.

This work was supported by the Spanish Ministry of Educationand Science under Project TEC2006- 01428/TCM, and by the STREP project No. IST-026905 (MASCOT) within the 6th framework program of the European Commission.