Throughput of cellular systems with conferencing mobiles and cooperative base stations

O. Simeone, O. Somekh, G. Kramer, H. Vincent Poor, S. Shamai

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

This paper considers an enhancement to multicell processing for the uplink of a cellular system, whereby the mobile stations are allowed to exchange messages on orthogonal channels of fixed capacity (conferencing). Both conferencing among mobile stations in different cells and in the same cell (inter- and intracell conferencing, resp.) are studied. For both cases, it is shown that a rate-splitting transmission strategy, where part of the message is exchanged on the conferencing channels and then transmitted cooperatively to the base stations, is capacity achieving for sufficiently large conferencing capacity. In case of intercell conferencing, this strategy performs convolutional pre-equalization of the signal encoding the common messages in the spatial domain, where the number of taps of the finite-impulse response equalizer depends on the number of conferencing rounds. Analysis in the low signal-to-noise ratio regime and numerical results validate the advantages of conferencing as a complementary technology to multicell processing.

Original languageEnglish (US)
Article number652325
JournalEurasip Journal on Wireless Communications and Networking
Volume2008
DOIs
StatePublished - Aug 12 2008

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Computer Science Applications
  • Computer Networks and Communications

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