Novel block decision feedback equalizers for MIMO-OFDM used in UTRA LTE for UTRA LTE
| Autor: | Bertram Gunzelmann, Peter Jung, Christian Drewes, Tobias Scholand, Christoph Spiegel, Jens Berkmann, Zijian Bai, Guido H. Bruck |
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| Rok vydání: | 2009 |
| Předmět: |
V-BLAST
Engineering Minimum mean square error OFDM (Orthogonal Frequency Division Multiplexing) Orthogonal frequency-division multiplexing business.industry UTRA LTE MIMO Equalization (audio) Earth and Planetary Sciences(all) Data_CODINGANDINFORMATIONTHEORY General Medicine MIMO-OFDM spatial multiplexing Spatial multiplexing Single antenna interference cancellation Telecommunications link Electronic engineering UMTS successive interference cancellation business Computer Science::Information Theory |
| Zdroj: | Procedia Earth and Planetary Science. 1:1425-1434 |
| ISSN: | 1878-5220 |
| DOI: | 10.1016/j.proeps.2009.09.220 |
| Popis: | The long term evolution of UMTS Terrestrial Radio Access, abbreviated as UTRA LTE, will use OFDM (orthogonal frequency division multiplexing) combined with MIMO (multiple-input multiple-output), termed MIMO-OFDM. And spatial multiplexing MIMO scheme is deployed in UTRA LTE downlink to provide high data rates. Considering the detection of spatial multiplexing signals, well-known techniques such as the V-BLAST schemes provide an attractive error ratio performance, but still a considerable signal processing effort, which merits further research towards less complex schemes. In this communication, the authors will propose a novel set of detection techniques which use intrinsic block decision feedback equalization (BDFE) characteristics instead of successive interference cancellation (SIC). Both zero-forcing (ZF) and minimum mean square error (MMSE) schemes based BDFE are proposed, termed as MIMO-BDFE-ZF and MIMO-BDFE-MMSE. Setting out from a novel general model for the evaluation of the signal-to-noise ratio (SNR) at the data detector output, the authors will evaluate the error ratio performance of the novel MIMO-BDFE and provide comparison results. It will be shown that the porposed scheme provide an attractive performance at a lower realization complexity. |
| Databáze: | OpenAIRE |
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