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Massive MIMO can significantly improve diversity/multiplexing gain, channel capacity and spectrum efficiency. An efficient signal detection algorithm plays a very important role for system performance. However, the BER, complexity and delay performance of present signal detection algorithms are far from optimal with the increasing number of antennas. This paper presents an improved mixed Gibbs sampling...
Realistic power amplifier (PA) model plays a very important role in the energy efficiency analysis for relay system, since it takes up to 70% of the total power consumption. In this paper, we aim to investigate the impact of non-ideal PA on the optimal relay deployment for two-way relay system using amplify forward or decode forward protocol in comparison with that of ideal PA. In the two-way relay...
Abstract-Multiple-input multiple-output (MIMO) technology has been widely used as an efficient way to improve the capacity of wireless channels. As an optimal detection for MIMOOFDM systems, the maximum likelihood (ML) algorithm whose complexity rises exponentially with the number of transmit and receive antennas is not practical for real-time detection. Instead, the sphere decoding (SD) algorithm...
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