Ming-Chang Sun

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We consider the performance analysis of beam space-time of a multiple-input multiple output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems for high data rate wireless transmission. The tools of density evolution with mixture Gaussian approximations are used to compute minimum operational signal-to-noise ratios (SNRs) for ergodic MIMO OFDM(More)
Two-phase micro-pipeline asynchronous modules show faster performance than common four-phase control systems, but the conventional systems with multi-port modules normally suffer from long signal paths on stacked C-elements. NOR-based control schemes provide an alternative solution to problems such as propagation delay. This paper compares modified versions(More)
SUMMARY In the design of cascode CMOS low-noise amplifiers , the gate-drain capacitance is generally neglected because it is thought to be small enough compared to gate-source capac-itance. However, a careful examination will reveal the fact that the drain impedance of the input transistor significantly affects the input impedance through the gate-drain(More)
The frequency domain channel model for Rician fading channels has been applied. It allows performance results to be shown as a function of the channel parameters }, , , { 0 rms K P τ the normalized receiver power (NRP), the Rician K-factor, and root mean square (rms) delay spread (RDS). Assuming perfect channel estimation or, if differential schemes are(More)
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