Power and signature optimization for forward link CDMA with multiple antennas

Hao Bi*, Michael L Honig

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Signature sequences and associated powers are optimized jointly with linear receivers for a multi-user forward-link CDMA system with multiple transmit and receive antennas. The performance criterion is sum capacity over all users. For the model considered, the optimal signatures are sinusoids so that multi-carrier signaling, in which each carrier is assigned to a single user, maximizes the achievable rate. An optimal assignment of carriers to users appears to be difficult to determine in general, but can be efficiently approximated numerically. The asymptotic sum capacity for large number of users and antennas is characterized at high SNRs. The accuracy of these results for moderate SNRs is illustrated through comparisons with numerically optimized power allocations.

Original languageEnglish (US)
Title of host publication2006 IEEE International Conference on Communications, ICC 2006
Pages1356-1361
Number of pages6
DOIs
StatePublished - Dec 1 2006
Event2006 IEEE International Conference on Communications, ICC 2006 - Istanbul, Turkey
Duration: Jul 11 2006Jul 15 2006

Publication series

NameIEEE International Conference on Communications
Volume3
ISSN (Print)0536-1486

Other

Other2006 IEEE International Conference on Communications, ICC 2006
CountryTurkey
CityIstanbul
Period7/11/067/15/06

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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    Bi, H., & Honig, M. L. (2006). Power and signature optimization for forward link CDMA with multiple antennas. In 2006 IEEE International Conference on Communications, ICC 2006 (pp. 1356-1361). [4024329] (IEEE International Conference on Communications; Vol. 3). https://doi.org/10.1109/ICC.2006.254937