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Novel Frequency Domain DFE with Oblique Projection for CP Free ST-BC MIMO OFDM System

This thesis present a new receiver framework for the cyclic-prefix free (CP-free) MIMO-OFDM system, equipped with the space-time block coded (ST-BC) uplink transmission over (slowly) time varying multipath channels. Usually, without CP in the OFDM system the inter-carrier interference (ICI) could not be removed, effectively, at the receiver, when the inter-symbol-interference (ISI) has to be taken into account.
In this thesis, by exploiting the spatial and frequency resources, we propose a novel frequency-domain decision-feedback equalizer, associated with the oblique projection (OB), to combat the effects of ISI and ICI, simultaneously. The OB is a non-orthogonal projection and is very useful to deal with the structure noise (e.g., the ISI term). From computer simulations, we observe that the performance of propose scheme can perform very close to the conventional CP-based MMO-OFDM with the ST-BC.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0818109-181542
Date18 August 2009
CreatorsWu, Chih-wei
ContributorsMiin-Jong Hao, Ju-Ya Chen, Gin-Kou Ma, Jenq-Tay Yuan, Shiunn-Jang Chern
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageEnglish
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0818109-181542
Rightswithheld, Copyright information available at source archive

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