Qi Zhang

TL;DR: Analytical closed-form expressions are derived for the cyclic autocorrelation function (CAF), cyclic spectrum (CS), complementary CAF (CCAF), complementary CS (CCS), and corresponding cycle frequencies (CFs) and the conditions for avoiding aliasing in the cycle and spectral frequency domains are obtained.

TL;DR: A mathematical model for predicting the system bit-error-rate (BER) performance is derived for intersymbol interference-free transmission over an ultra-wideband channel, and validated with computer simulated results.

TL;DR: The simulation results have shown that compared with the optimal detector, the proposed suboptimal detector reduces the receiver complexity at the expense of acceptable performance degradation of proposed non-coherent FSK modulated two-way AF cooperative communications.

TL;DR: A digital eigen-based (EB) receiver which first converts the analog signal to digital signal and then demodulates the received signal in digital domain is proposed which can outperform the conventional autocorrelation receiver.

TL;DR: A differentially-encoded, di-symbol time-division multiuser impulse radio (d2TD-IR) system with delay-sum autocorrelation receivers that outperforms the conventional time-hopping impulse radio system at high signal-to-noise ratio and is proposed to estimate the optimal chip duration when only the average power decay profile of the UWB channel is known.