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In this paper, a novel time reversal imaging (TRI) algorithm for damage detection in concrete is presented. The standard time reversal imaging method typically suffers from performance degradation when the echo signals are interfered by strong noise. The proposed method is developed to address the aforementioned issues. First, the echo signals are time reversed and rebroadcasted from each receiver's...
In the wireless power transfer systems using microwave, power conversion efficiency (PCE) represents a major challenge, especially at low input power levels. In this paper, a cooperative wireless power transmission method based on time reversal technology is developed to achieve a high input voltage. The performance of the proposed approach is investigated by using numerical experiments. Experimental...
This paper considers iterative carrier recovery for continuous transmission. To overcome the potential cycle slip, we propose to employ the distributed pilots with minor overhead for framing. By extensive simulations, we found that the probability of the cycle slip may be very low and not observed in simulations with distributed pilots for the rate-1/3 LDPC coded QPSK modulation at very low signal-to-noise...
Based on the recently-proposed iterative receiver by Colavolpe et al., we extend it to further incorporate the mechanism of frequency offset compensation. As a progressive approach, the factor graph of a long frame is first divided into numerous subgraphs of short block, iterative decoding can successfully start its work as the effect of frequency offset can be well mitigated due to the small size...
Based on the recently-proposed iterative receiver by Colavolpe et al., we extend it to further incorporate the mechanism of frequency-offset compensation. As a progressive approach, the factor graph of a long frame is first divided into numerous subgraphs of short block, iterative decoding can successfully start its work as the effect of frequency-offset can be well mitigated due to the small size...
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