Identification of the Absence of Direct Path in Indoor Localization Systems

A Novel Scheme for NLOS Identification using Energy Detector in 60 GHz Systems

“…NLOS identification and mitigation techniques have been discussed extensively in the literature, but mainly within the cellular network framework [7][8][9][10][11][12][13]. For example, in [7], standard deviation of ranging measurements is compared with threshold for NLOS identification, where measurement noise variance is assumed to be known.…”

“…When statistics of kurtosis, mean excess, and RMS delays are priori known, likelihood ratio tests can be performed for hypothesis selection. Another method was proposed by Heidari et al [10]. They tried to find the first detected path of the received signal as a peak of filtered channel impulse radio.…”

A New Low Complexity NLOS Identification Approach Based on Minimum Slope and Kurtosis of Energy Block for 60 GHz System

“…NLOS identification and mitigation techniques have been discussed extensively in the literature, but mainly within cellular network framework [7][8][9][10][11][12][13]. For example, in [7], skewness of ranging measurements is compared with threshold for NLOS identification, where measurement noise variance is assumed to be known.…”

“…When statistics of kurtosis, mean excess, and RMS delays are priori known, likelihood ratio tests can be performed for hypothesis selection. Another method was proposed by Heidari et al [10]. They tried to find the first detected path of the received signal as a peak of the filtered channel impulse radio.…”

A New Low Complexity NLOS Identification Approach Based on Maximum Slope and Skewness of Energy Block for 60GHz System

“…The NLOS identification and mitigation techniques have been discussed extensively in the literature, but mainly within the cellular network framework [7][8][9][10][11][12][13]. For example, in [7], skewness of the ranging measurements is compared with the threshold for NLOS identification, where the measurement noise variance is assumed to be known.…”