Patent ID: 8005168
Filing Date: 2011-08-23
Classification: H04K,H04L

Abstract:
1. A communication apparatus, comprising: a correlator which multiplies source data by a user unique code provided for multiaccess, and outputs transmission data; a transmission signal generating unit which generates a chaotic transmission signal by masking the transmission data with respect to a chaotic signal; an antenna which transmits the chaotic transmission signal; a detecting unit which detects an envelope of the chaotic transmission signal being received over the antenna, and converts the chaotic transmission signal into a curved signal based on the detected envelope; a computing unit which computes maximum and minimum levels of the curved signal; and a slicer which converts the curved signal into digital data, by applying a hysteresis thresholding based on the maximum and minimum levels, wherein the computing unit computes each of the maximum level and the minimum level based on both a maximum average of the curved signal and a minimum average of the curved signal.