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The control systems typically use the conventional PID (Proportional, Integral, Derivative) controller to control the direct current (DC) voltage [1]. The obtained control results are relatively well when PID controller is applied, but the design parameters are not absolutely precise and sensitive to the changes of system parameters. The PID controller is used to control the frequency of three-phase...
We propose a differential space-time coded (STC) radio-frequency-identification (RFID) system where the tag has two antennas and the reader has a single or multiple antennas. In this system, the M-ary phase-shift keying constellation is used, and encoding at the tag and decoding at the reader are simple. Simulation results show that the proposed STC RFID system can achieve a performance improvement...
In this paper, a novel limited feedback scheme, based on scalar quantization, is proposed for Tomlinson-Harashima precoding (THP) in multi-user multiple-input multiple-output (MU-MIMO) systems. Due to the sensitivity of THP to erroneous channel state information (CSI), the conventional codebook-based channel vector quantization (CVQ) is no longer suitable since its complexity grows exponentially with...
In this paper a new technique is proposed for time-domain detection in energy detection. The proposed scheme is based on a independent-component analysis (ICA): blind separation of unknown source signals. This method not only improves the nicety of time-domain detection for narrow band signal and the sinusoidal signal but also reduces the power of the whole detection system.
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