Seung Goo Kang's scientific contributionswhile working at Sungkyunkwan University (Seoul, South Korea) and other institutions

Publications (10)

Publications citing this author (5)

    • In order to improve the mean acquisition time (MAT) at a bearable hardware complexity, several approaches have been proposed. Since the phase of PN sequence can be determined by the initial state of linear feedback shift register (LFSR), Baek et al. [2] proposed a type of acquisition method using sequential estimation, where hard chip decisions were made and loaded as initial states of LFSR. This method can effectively reduce the MAT and hardware complexity at high SNR regime.
    [Show abstract] [Hide abstract] ABSTRACT: Pseudonoise (PN) code acquisition technique based on iterative message passing algorithm (iMPA) has been proposed due to its short acquisition time and low complexity. However, the cyclic and regular nature of constructed tanner graph makes it difficult to achieve promising performance. To address this problem, this correspondence proposes a new message passing algorithm based on adaptive parity check matrix. We find multiple sets of linear sparse constraints for PN sequence by squaring the generator polynomial. The topology of the graphic models as well as the parity check matrix is adapted every a few iterations to avoid local optima. The performance of proposed algorithm is evaluated in terms of detection probability. Simulation results show that this method provides more than 3 dB gains over iMPA with fixed parity check matrix.
    Article · Aug 2013
    • The false alarm rate at the corresponding SNR values is 0.03 which is much below the required false alarm rate of 0.1. Figure 6shows a comparative study of the proposed correlation coefficient based CP detection method to NP based TDSC detection method for AWGN channel (TDSC-NP-AWGN [16]) in terms of the probability of misdetection. For TDSC method í µí±ƒ md = 0.9 at SNR −22 dB.
    [Show abstract] [Hide abstract] ABSTRACT: Digital terrestrial television (DTV) covers an area with radius as large as 60 km. Federal Communications Commission (FCC) and Office of Communications (Ofcom) suggests detection of DTV signal at signal strength of as low as −114 dBm and −120 dBm respectively. Thus, detection of DTV signals in low signal-to-noise ratio (SNR) is vital. Continual pilot (CP) positions in all the DTV signals are fixed. Digital Video Broadcasting Terrestrial (DVB-T), a DTV standard, is followed by most of the countries of the world. In this paper we propose a correlation based CP detection which can detect a DVB-T signal at low SNR. One CP carrier was generated at the receiver which was correlated with the received orthogonal frequency division multiplexing (OFDM) signal sequence. The correlation coefficient was then compared with a threshold correlation coefficient to identify the existence of the CP to detect the presence of a DVB-T signal and thereby spectrum hole. It was found from the simulation study for additive white Gaussian noise (AWGN) channel that signal detection at low SNR is possible compared to the time domain symbol cross-correlation (TDSC) method.
    Full-text · Article · Jun 2016