Performance analysis of synchronous MC-CDMA in mobile Rayleigh channel with both delay and Doppler spreads

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Abstract

Rapid time variations of the mobile communication channel have a dramatic effect on the performance of multicarrier modulation. This paper models the Doppler spread and computes its effect on the bit error rate (BER) for multicarrier code division multiple access (MC-CDMA) transmission and compares it to orthogonal frequency division multiplexing (OFDM). Also, we evaluate the transmission capacity per subcarrier to quantify the potential for MC-CDMA and (coded-) OFDM. We focus on linear receivers, in particular those using the minimum mean-square error (MMSE) criterion. Our channel and system models allow the computation of analytical performance results. Simulations verify some commonly used, yet critical assumptions.

Original languageEnglish
Pages (from-to)1375-1387
Number of pages13
JournalIEEE Transactions on Vehicular Technology
Volume50
Issue number6
DOIs
Publication statusPublished - 1 Nov 2001
Externally publishedYes

Keywords

  • Doppler effect
  • Fading channels
  • Intercarrier interference
  • Multicarrier code division multiple access (MC-CDMA)
  • Multicarrier modulation
  • Orthogonal frequency division multiplexing (OFDM)
  • Rayleigh fading

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