Abstract:
Disclosed are a method and an apparatus for transmitting a sparse signal, and a method and an apparatus for recovering the sparse signal. The method for recovering a sparse signal by using a sparse signal recovering device that recovers a target signal from a received signal includes receiving a measurement signal with a noise signal from a sparse signal transmitting device which scans a target signal based on a measurement matrix, performing a mutual update procedure in which a likelihood probability is calculated by using a posterior probability of the target signal based on a relation between the target signal and the measurement signal, and the posterior probability is updated by using the likelihood probability, and recovering the target signal by performing maximum a posterior estimation for a final posterior probability output through the mutual update procedure.
Abstract:
Disclosed is a multiple sensor system including a plurality of different sensor devices to acquire respective signals sensed from a single signal source, and a signal acquisition apparatus to recover an original signal generated from the signal source. The signal acquisition apparatus recovers the original signal by applying joint recovery, based on characteristics and correlations between the respective sensor devices, to compressive sensing signals independently compressively sensed and transmitted from the respective sensor devices. At this time, a sensing matrix F prearranged with the respective sensor devices and channel information C between the original signal and each sensor device are used for joint recovery.
Abstract:
Disclosed is a multiple sensor system including a plurality of different sensor devices to acquire respective signals sensed from a single signal source, and a signal acquisition apparatus to recover an original signal generated from the signal source. The signal acquisition apparatus recovers the original signal by applying joint recovery, based on characteristics and correlations between the respective sensor devices, to compressive sensing signals independently compressively sensed and transmitted from the respective sensor devices. At this time, a sensing matrix F prearranged with the respective sensor devices and channel information C between the original signal and each sensor device are used for joint recovery.
Abstract:
Disclosed are a method and an apparatus for transmitting a sparse signal, and a method and an apparatus for recovering the sparse signal. The method for recovering a sparse signal by using a sparse signal recovering device that recovers a target signal from a received signal includes receiving a measurement signal with a noise signal from a sparse signal transmitting device which scans a target signal based on a measurement matrix, performing a mutual update procedure in which a likelihood probability is calculated by using a posterior probability of the target signal based on a relation between the target signal and the measurement signal, and the posterior probability is updated by using the likelihood probability, and recovering the target signal by performing maximum a posterior estimation for a final posterior probability output through the mutual update procedure.