Seungkeun Park

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We present a sensor fusion system using lidar and camera. We separate the system into two part which is hypothesis generation part and hypothesis verification part. These parts use different single sensors. Hypothesis generation is done using the lidar and hypothesis verification is done using the camera image. In hypothesis generation, we cluster the lidar(More)
—This letter presents a joint approach to the symbol-error probability (SEP) of coherent-ary phase-shift keying in a situation where the phase error, quadrature error, and in-phase–quadrature (I-Q) gain mismatch problems take place all concurrently over an additive white Gaussian noise and arbitrary fading channel. A set of equations that characterizes the(More)
Recently, it is highly issued to extend wireless communication service on licensed band to unlicensed band as a part of effective utilization of the limited spectrum resources. Because Wi-Fi service is widely used in the targeted unlicensed band, the co-existence performances of Wi-Fi with the wireless communication service should be investigated. In this(More)
This paper describes the performance analysis of several existing backoff algorithms in terms of achievable throughput and short-term fairness. Through the performance evaluations conducted by the event-driven simulator we show the tradeoff of the maximum achievable throughput and short-term fairness. According to our investigations controlling the growth(More)
In the era of data explosion and shortage of frequency resources, sharing of under-utilized spectrum is promising solution to improve spectral efficiency by using cognitive radio technologies. Various studies and feasibility tests on application of UHF TV band have been performed. This paper introduces a monopole antenna for a CR test-bed operating on TV(More)