A Modified DFE-MMSE Equalization Algorithm

Yu Xia; Fang Ye; Yi Bing Li; Ling Wang

doi:10.4028/www.scientific.net/AMR.981.444

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 981A Modified DFE-MMSE Equalization Algorithm

A Modified DFE-MMSE Equalization Algorithm

Abstract:

In wireless communication, inter symbol interference (ISI) and signal distortion are often caused by the frequency deviation and time offset of wireless channel. To eliminate or reduce ISI, people proposed the channel equalization technology. However, traditional decision feedback equalization algorithm based on MMSE criterion equalizer (DFE-MMSE) often introduces the error diffusion which degrades the performance of the equalizer in iterative system. In this paper, we propose an improved DFE-MMSE algorithm to reduce the error diffusion and improve the performance of iterative equalization, with a correction factor. Simulation results show that our algorithm achieves better bit error rate, which makes it competent in more practical cases.

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Periodical:

Advanced Materials Research (Volume 981)

Pages:

444-449

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.981.444

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Online since:

July 2014

Authors:

Yu Xia*, Fang Ye, Yi Bing Li, Ling Wang

Keywords:

Bit Error Rate, Correction Factor, DFE-MMSE, Turbo Equalization

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