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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2011-11-29
A New Practical Receiver for a Decode-and-Forward Cooperative CDMA Systems Based on a Blind λ-Combiner
By
Noha O. El-Ganainy,

    Dr. Noha O. El-Ganainy

    Electronics and Communications Department

    Arab Academy of Science and Technology AAST

    Egypt

    Homepage

Said El-Khamy

    Dr. Said El-Khamy

    Department of Electrical Eng.

    Alexandria University

    Egypt

    Homepage

Progress In Electromagnetics Research Letters, Vol. 28, 23-36, 2012
doi:10.2528/PIERL11092806 | Google Scholar

Abstract
This paper develops a practical receiver suggested for cooperative systems using decode-and-forward transmission and compares it to the theoretical sub-optimum λ-MRC receiver model. The proposed receiver model adopts a channel blind λ-combiner and employs a practical estimation of the combiner's weight λ that changes adaptively for each received bit. The λ estimation process relies on a dynamic-blind calculation performed on the incoming bit stream using an approximate formula. The accuracy of the estimated values of λ against the numerical (optimum) values is verified by comparing their effects on the performance curves. Next, the performance of the proposed receiver is evaluated against the sub-optimum receiver using the closed-form performance equations then verified using an actual implementation of the decode-and-forward cooperative algorithm. The use of the proposed receiver is shown to have reliable performance under different channel assignments and provides adaptivity to channel variations without complexity or exaggerated signal processing.
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Citation
Noha O. El-Ganainy, and Said El-Khamy, "A New Practical Receiver for a Decode-and-Forward Cooperative CDMA Systems Based on a Blind λ-Combiner," Progress In Electromagnetics Research Letters, Vol. 28, 23-36, 2012.
doi:10.2528/PIERL11092806
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