Abstract
We analyze the spectral efficiency (sum-rate per sub-carrier) 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.
Original language | English (US) |
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Pages (from-to) | 479-505 |
Number of pages | 27 |
Journal | IEEE Transactions on Information Theory |
Volume | 51 |
Issue number | 2 |
DOIs | |
State | Published - Feb 2005 |
All Science Journal Classification (ASJC) codes
- Information Systems
- Computer Science Applications
- Library and Information Sciences
Keywords
- Channel capacity
- Fading channels
- Multicarrier code-division multiple access (MC-CDMA)
- Multiuser information theory
- Random matrix theory