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Considering the three dimensional (3D) channel with elevation effect, a two dimensional (2D) antenna array was employed in a generic ray-based 3D multi-input multi-output (MIMO) system. Through utilizing the channel spatial correlation between antennas at the transmitter side, we propose a cascaded MMSE channel estimation with low computational complexity. Numerical results show that the proposed...
Future fifth generation (5G) mobile networks will greatly increase the date-rate of communication. Three-dimensional (3D) multiple input multiple output (MIMO) systems have drawn more and more attention as they meet the increasing date-rate demands in 5G mobile networks. However, in the practical system, the large overhead of the channel state information-reference signal (CSI-RS) would become a barrier...
For massive MIMO system, few research has been done for multipath frequency selective fading model among all literatures. Hence, in this paper we propose a 2-stage multibranch linear MOE (minimum output energy) receiver which collects symbols from different paths to deal with frequency selective fading environment. Due to the big number of antennas, we are using sample covariance matrix other than...
The study proposes a novel feedback linearization and almost disturbance decoupling control of nonlinear multiple-input-multiple-output (MIMO) systems. The goal of cancer immunotherapy is focused on eliciting an immune system response against the tumor. The study investigates a novel feedback linearization control strategy of nonlinear MIMO tumor-immune system. The main contributions of this study...
In this paper, a two-hop MIMO-OFDM relay system with a decode-and-forward (DF) relay is considered, in which each terminal is equipped with multiple antennas. With the goal of maximizing the instantaneous capacity, a suboptimal power allocation algorithm under the total transmit power constraint is proposed. Since the independence of fading channel during each hop, subcarrier pairing strategy is given...
We investigate channel estimation for long term evolution (LTE) uplink over frequency-selective fading multiple-input multiple-output (MIMO) channels. As the conventional DFT-based channel estimation algorithm used for obtaining the channel impulse response (CIR) in wide band may not be applicable in narrow band of LTE uplink, which results an irreducible error floor, we propose an novel channel estimation...
In practical multiuser MIMO-OFDM system, due to the bandwidth limits of the feedback channel, only the partial channel state information is available at the transmitter. In this paper, we propose a low-cost precoding scheme, which only needs partial channel state information on a fraction of all subcarriers. Channel state information on other subcarriers is recovered by interpolating and making full...
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