Communication Dans Un Congrès Année : 2006

Channel Estimation for orthogonal STBC MC-CDMA systems over realistic MIMO channels

Résumé

This paper investigates a downlink multiple-input multiple-output (MIMO) multi-carrier code division multiple access (MC-CDMA) system with pilot aided channel estimation (PACE) and iterative channel estimation (ICE) in the receiver. Due to the superposition of different users' spread data signals, zero-valued chips can occur after spreading, which can cause noise enhancement when using data estimates as reference signals in ICE. Hence, we propose a MIMO channel estimation method to overcome the above problem and avoid noise enhancement in ICE. Simulations results for PACE and ICE were computed for a realistic outdoor MIMO channel model. The results show that frame error rates of ICE are smaller than the ones of PACE.

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Dates et versions

hal-00082812 , version 1 (20-07-2006)

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  • HAL Id : hal-00082812 , version 1

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Stephan Sand, Fabrice Portier, Jean-François Hélard. Channel Estimation for orthogonal STBC MC-CDMA systems over realistic MIMO channels. 2006. ⟨hal-00082812⟩
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