Je-woo Kim

Up-link access apparatus in direct sequence code division multiple access system

Orthogonal frequency division multiplexing/modulation communication system for improving ability of data transmission and method thereof

Non-coherent digital receiver of a spread spectrum communication system

PN code sync device using an adaptive threshold

Data transmitter and receiver of a DS-CDMA communication system

Base station transceiver for frequency hopping code division multiple access system

Radio communication system adapting time division duplexing/frequency hopping

Receiver in a direct-sequence spread-spectrum communication system using a window filter

Frequency hopping communication device and frequency hopping method

Modulation apparatus and method using zero-crossing detection