Minimum Bit Rate Error Pre FFT Beam Forming for OFDM Communication Systems

Authors

  • Dr. Waleed Abdallah

Keywords:

MBER beamforming, OFDM systems, Pre-FFT, MMSE beamforming, probability density function (pdf), smart antenna.

Abstract

In broadband wireless communication, the adaptive antenna array (AAA)

is combined with orthogonal frequency division multiplexing (OFDM) to

combat the inter-symbol interference (ISI) and the directional interferences.

One of the two main techniques which are used in OFDM systems is called

Pre-FFT, where an optimum beamformer weight set is obtained in time

domain before Fast Fourier Transform (Pre-FFT). In this paper, the optimum

weight set is obtained based on minimum bit error rate (MBER) criteria in

pilot-assisted OFDM systems under multipath fading channel. Here, the

development of the block-data adaptive to implementation of the MBR

beamforming solution is based on the Parzen window estimate of probability

density function (pdf). The simulation results show that the MBER technique

utilizes the antenna array elements more intelligently than the standard

minimum mean square error (MMSE) technique. The MBER technique can

be used to achieve excellent performance since it directly minimizes the BER

and requires shorter training symbols.

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Published

2017-06-12

How to Cite

Abdallah, D. W. (2017). Minimum Bit Rate Error Pre FFT Beam Forming for OFDM Communication Systems. Journal of Al-Quds Open University for Humanities and Social Studies, 1(31). Retrieved from https://journals.qou.edu/index.php/jrresstudy/article/view/844

Issue

Vol. 1 No. 31 (2013): العدد الحادي والثلاثون، الجزء الاول، ذو القعدة 1434هـ/ تشرين الاول 2013م

Section

Research Papers

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