Title :
Spectral efficiency of multicarrier CDMA
Author :
Tulino, Antonia M. ; Li, Linbo ; Verdú, Sergio
Author_Institution :
Univ. Federico, Napoli, Italy
Abstract :
We analyze the spectral efficiency (sum-rate per subcarrier) of randomly spread synchronous multicarrier code-division multiple access (MC-CDMA) subject to frequency-selective fading in the asymptotic regime of number of users and bandwidth going to infinity with a constant ratio. Both uplink and downlink are considered, either conditioned on the subcarrier fading coefficients (for nonergodic channels) or unconditioned thereon (for ergodic channels). The following receivers are analyzed: a) jointly optimum receiver, b) linear minimum mean-square error (MMSE) receiver, c) decorrelator, and d) single-user matched filter.
Keywords :
channel capacity; code division multiple access; fading channels; least mean squares methods; matched filters; matrix algebra; multiuser channels; radio links; radio receivers; spread spectrum communication; MC-CDMA; MMSE; channel capacity; decorrelator; frequency-selective fading channels; jointly optimum receiver; linear minimum mean-square error receiver; multiuser information theory; random matrix theory; single-user matched filter; spectral efficiency; spread synchronous multicarrier code-division multiple access; Bandwidth; Decorrelation; Downlink; Fading; Frequency; H infinity control; Matched filters; Multiaccess communication; Multicarrier code division multiple access; Spectral analysis;
Journal_Title :
Information Theory, IEEE Transactions on
DOI :
10.1109/TIT.2004.840875
