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Griffiths' Algorithm Based Adaptive LMMSE Equalizers for HSDPA MIMO Systems  

Joo, Jung-Suk (Hankuk University of Foreign Studies)
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Abstract
In CDMA-based systems, recently, researches on chip-level equalization have been studied in order to improve receiving performance when supporting high-rate data services. In this paper, we propose Griffiths' algorithm based chip-level adaptive LMMSE equalizers for HSDPA MIMO systems using D-TxAA (dual stream transmit antenna array). First, we will derive two possible structures of Griffiths' algorithm based equalizer, and then compare their performance through computer simulations in various mobile channel environments.
Keywords
HSDPA MIMO systems; D-TxAA; chip-level equalization; Griffiths' algorithm;
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