Motoya Iwasaki

Preamable detection circuit for digital communications system

Spread packet communication system

Carrier frequency error detector capable of accurately detecting a carrier frequency error

Coherent PSK demodulator using bit error rate and S/N ratio to establish synchronization

Wireless communication system, data transmission method for uplink thereof, base station device, and mobile station device

Nonlinear distortion compensating circuit

Method and device for estimating reception quality in radio communication

Method and apparatus for preamble-less demodulation

Method and arrangement of pointing an antenna beam to a stationary satellite

Automatic frequency control apparatus and method therefor