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“To be considered for the 2017 IEEE Jack Keil Wolf ISIT Student Paper Award.” We provide a sphere-packing lower bound for the optimal error probability in finite blocklengths when coding over a symmetric classical-quantum channel. Our result shows that the pre-factor can be significantly improved from the order of the subexponential to the polynomial, This established pre-factor is arguably optimal...
“To be considered for the 2017 IEEE Jack Keil Wolf ISIT Student Paper Award.” We show that the reliable communication through a classical-quantum channel is possible when the transmission rate approaches the channel capacity sufficiently slowly. This scenario exists between the non-vanishing error probability regime, where the rate tends to capacity with a fixed error, and the small error probability...
“To be considered for the 2017 IEEE Jack Keil Wolf ISIT Student Paper Award.” We study the asymptotic behavior of the type-I error in quantum hypothesis testing when the exponent of the type-II error approaches the quantum relative entropy sufficiently slowly. Our result shows that the moderate deviation principle holds for the testing problem if the quantum relative variance is positive. Our proof...
In this paper, a tri-mode fully-integrated capacitive voltage multiplier is proposed. The system provides power conversion efficiency over 60% within the loading current ranges from 60 μA to 160 μA. The input voltage (Vin) ranges from 0.45–0.7V to meet the output of photovoltaic cells, and the output voltage (Vout) is set as 1.2V. The proposed tri-mode operation combines doubler mode, tripler mode...
The auxiliary function of a classical channel appears in two fundamental quantities, the random coding exponent and the sphere-packing exponent, which yield upper and lower bounds on the error probability of decoding, respectively. A crucial property of the auxiliary function is its concavity, and this property consequently leads to several important results in finite blocklength analysis. In this...
This paper presents a WLAN card's MIMO antenna structure, which uses three loops implemented with geometrical discriminations to produce diversities. Potential methods that utilize ground strips and slots to compromise the return and insertion (isolation) losses are numerically and experimentally examined. Data throughput via a realistic system implementation was also examined, which has shown that...
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