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We propose interference cancellation in multiuser relay network with improved Amplify-and-Forward (AF) and Decode-and-Forward (DF) relay protocols. We use Dirty Paper Coding (DPC) and Thomilson Harashima Precoding (THP) for the Precoding schemes allied with detection techniques as Zero Forcing (ZF), Minimum Mean Square Error (MMSE) and Successive(More)
Cooperative relaying is considered as the most cost-efficient method in 3GPP LTE-Advanced in terms of coverage prolongation and transmission efficiency. In this paper, we analyze the best performing cooperative relaying scheme between the Amplify-- and--Forward (AF) and Decode-and--Forward (DF) schemes for LTE-Advanced systems. The comparison between AF and(More)
request, provided it is not made publicly available until 12 months after publication. Abstract The rapid growth in mobile communication users necessitates the development of reliable communication systems that provide higher data rates. To meet these requirements, techniques such as multiple input multiple output (MIMO) and orthogonal frequency division(More)
Sphere decoding is a technique able to achieve the optimal performance of the maximum likelihood decoder, but its high and variable complexity can make the practical implementation infeasible. In this paper, we present an adaptive system, called adaptive SD-OSIC, as a way of reducing the decoding complexity while maintaining the error performance of(More)
In this paper, Hybrid relay systems are comprised of Amplify-and-Forward (AF), Decode-and-Forward (DF) and DeModulate-and-Forward (DMF) together in cooperative networks. We propose adaptive relay schemes based on Channel State Information (CSI) of the received Signal-to-Noise Ratio (SNR) at the Relay Node (RN). We select the relay protocol adaptively, on(More)