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Enhanced Alamouti Space-Time Block-Coding Transmission Based on a Developed OFDM System

Lookup NU author(s): Professor Said Boussakta, Dr Salama Ikki

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Abstract

This paper presents a new Alamouti space-timeblock coding (STBC) orthogonal frequency division multiplexing (ST-OFDM) system. The transmitter of the proposed scheme is based on a low complexity X-transform that is developed in [1] as a modulation scheme instead of the inverse fast Fourier transform (IFFT). The proposed ST-X-OFDM scheme massively reduces the transmitter complexity, the effects of multipath channels, and the peak-to-average power ratio (PAPR). The complexity of the proposed scheme is evaluated and compared with the conventional ST-OFDM, showing that the proposed scheme is efficient, fast, and simple in implementation. An exact closedform bit-error rate (BER) is derived for the proposed scheme over multipath channels and different kinds of modulation formats. Computer simulations corroborated by mathematical results prove that, over frequency-selective multipath channels and different mapping schemes, the proposed approach achieves significant signal-to-noise ratio (SNR) gain in comparison to the ST-OFDMsystem. The proposed ST-X-OFDMsystem adopts only a single, low complexity transform at the transmitter without precoding and achieves significant BER improvement over the conventional ST-OFDM system.


Publication metadata

Author(s): Leftah HA, Boussakta S, Ikki S

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 9th International Symposium on Communication Systems, Networks & Digital Signal Processing (CSNDSP 2014)

Year of Conference: 2014

Pages: 591-595

Online publication date: 16/10/2014

Acceptance date: 01/01/1900

Publisher: IEEE

URL: http://dx.doi.org/10.1109/CSNDSP.2014.6923897

DOI: 10.1109/CSNDSP.2014.6923897

Library holdings: Search Newcastle University Library for this item

ISBN: 9781479925810


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