Abstract: A mobile station that wirelessly transmits to a base station by DS-CDMA a signal spread by multiplying a spreading code includes a chip-pattern generating unit that generates a predetermined chip pattern by performing chip repetition for a predetermined number of repetitions to a spreading chip sequence, and a multiplying unit that multiplies to a signal including the predetermined chip pattern generated by the generating unit a phase specific to the mobile station.

Abstract: A wireless communications system includes a base station and multiple mobile stations performing wireless communication with the base station in a DS-CDMA scheme. Each of the mobile stations has a transmission unit configured to transmit a timing difference detection packet to the base station, prior to transmitting packet data. The base station has a transmission timing control unit configured to detect a difference in signal receive timing from the mobile stations based on the timing difference detection packet, produce transmission timing control information for each of the mobile stations based on the detection result, and supply the transmission timing control information to each of the mobile stations to cause the mobile stations to adjust the transmission timing of the packet data.

Abstract: A mobile station that wirelessly transmits to a base station by DS-CDMA a signal spread by multiplying a spreading code includes a chip-pattern generating unit that generates a predetermined chip pattern by performing chip repetition for a predetermined number of repetitions to a spreading chip sequence, and a multiplying unit that multiplies to a signal including the predetermined chip pattern generated by the generating unit a phase specific to the mobile station.

Abstract: A system of assembling wheels is disclosed, which comprises a steering angle correcting and phase matching unit for correcting the steering angle and also matching the phase of a hub of a car body suspended by a hanger being conveyed while being moved in synchronism with the car body and a wheel setting and hub nut tightening unit or setting a wheel on the phase-matched hub and tightening a nut thereon while being moved in synchronism with the car body. The horizontal distance between the steering angle correcting and phase matching unit and the wheel setting and hub nut tightening unit, is set to a distance such that when the wheel setting and hub nut tightening unit assembles a wheel onto the hub, the steering angle correcting and phase matching unit can correct steering angle and match the phase of the hub on which the next wheel is to be set.