Transmit Diversity Technique for DS-CDMA Systems in a Frequency Selective Fading Environment

HUANG Hui, LIAO Gui-sheng, ZHANG Lin-rang

ACTA ELECTRONICA SINICA ›› 2001, Vol. 29 ›› Issue (S1) : 1900-1903.

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ACTA ELECTRONICA SINICA ›› 2001, Vol. 29 ›› Issue (S1) : 1900-1903.

Transmit Diversity Technique for DS-CDMA Systems in a Frequency Selective Fading Environment

  • HUANG Hui, LIAO Gui-sheng, ZHANG Lin-rang
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Abstract

In this paper,the method of using open loop transmit diversity in a multi user DS-CDMA system operating in a frequency selective fading environment is considered.A novel approach is proposed for linear multi user detection in conjunction with transmit diversity to combat channel fading,multi user interference and inter symbol interference.By assigning spreading codes,blind and semi blind algorithms are developed for channel estimation and detection.Simulation results demonstrate that the proposed tech nique offers substantial performance over the RAKE receiver based on space time block codes,especially in a near-far situation.

Key words

ransmit diversity / multi-user detection / space time coding / CDMA receiver

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HUANG Hui, LIAO Gui-sheng, ZHANG Lin-rang. Transmit Diversity Technique for DS-CDMA Systems in a Frequency Selective Fading Environment[J]. Acta Electronica Sinica, 2001, 29(S1): 1900-1903.

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