Performance enhancement of cooperative networks utilizing MAP decoder and Alamouti code

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	Performance enhancement of cooperative networks utilizing MAP decoder and Alamouti code
Article 5, Volume 30, Issue 1, Winter 2021, Page 35-40 PDF (1018.45 K)
Document Type: Original Article
DOI: 10.21608/mjeer.2021.146087
Author
Safwat M. Ramzy
dept. Electrical Engineeing, Faculty of Engineering Sohag University Sohag, Egypt
Abstract
In this paper, we introduced another methodology for the cooperative network using the maximum posterior (MAP) and the Alamouti code decoding scheme for the multiple-input single-output (MISO) wireless networks that use decode and forward (DF) protocol as a cooperation protocol. Without loss of generality, the considered network consists of one source, one relay and one receiver. A closed-form expression for the upper bound of the bit error probability is derived. The obtained upper bound expression can be utilized in the power optimization problems, relay positioning issue. The results that are shown in this paper clear that the proposed scheme has two advantages over the related work. The first advantage is that it has less complexity. The second one is that it has better spectrum efficiency by using less number of channels. Therefore, our contribution can be summarized in improving the spectrum efficiency and reducing the complexity of the cooperative network, but the paid price is that the bit error rate increases by a little ratio
Keywords
—MAP decoder; Cooperative network; Alamouti code


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