Abstract: In a phase adjusting method and device in which a phase deviation between main signal frames themselves returned from a station end device through an antenna end device to the station end device without using a control signal for the phase adjustment, a reference signal generated in a first device is commonly mapped to respective down main signal frames of a first and a second system to be outputted to a second device, the second device maps, pointer values indicating timings of the reference signal in the respective down main signal frames to respective up main signal frames of the first and the second system to be outputted to the first device, and the first device extracts respective pointer values from the respective main signal frames and adjust frames of the respective up main signal frames based on the respective pointer values.

Abstract: A multiple-antenna system including a base station apparatus and a plurality of antenna apparatuses connected to the base station via optical cables is provided. The system comprises a first antenna apparatus and a second antenna apparatus connected to each other via an electric cable. Each of the first and second antenna apparatuses receives a reference pulse from the base station apparatus via the optical cables, and estimates a time difference between the received pulse and the reference pulse supplied from the counterpart antenna apparatus via the electric cable. At least one of the first and second antenna apparatuses adjusts signal transmission timing based on the time differences estimated by the first and second antenna apparatuses.

Abstract: Performing delay measurement between master and slave devices. The master transmits a delay measuring signal at a fixed timing relative to a synchronous pattern signal in an overhead and transmits a frame signal in which an internal delay time, associated with a frame signal generation, from a delay measurement start timing to a transmission timing of the delay measuring signal is stored in the delay measuring signal as a master offset value. The slave adds an internal delay time associated with a frame signal generation to the master offset value of the frame signal, making a slave offset value and transmits an updated delay measuring signal with the slave offset value. The master calculates a delay time by subtracting the slave offset value from a time difference between a timing at which the delay measuring signal transmitted from the slave is received and the delay measurement start timing.

Abstract: A phase difference delay control system is provided that enables distance measurement between a reference position and a terminal at the time of recovery after a line has been disconnected as a result of fluctuation of phase difference of clock crossover units.

Abstract: In a phase adjusting method and device in which a phase deviation between main signal frames themselves returned from a station end device through an antenna end device to the station end device without using a control signal for the phase adjustment, a reference signal generated in a first device is commonly mapped to respective down main signal frames of a first and a second system to be outputted to a second device, the second device maps, pointer values indicating timings of the reference signal in the respective down main signal frames to respective up main signal frames of the first and the second system to be outputted to the first device, and the first device extracts respective pointer values from the respective main signal frames and adjust frames of the respective up main signal frames based on the respective pointer values.

Abstract: A multiple-antenna system including a base station apparatus and a plurality of antenna apparatuses connected to the base station via optical cables is provided. The system comprises a first antenna apparatus and a second antenna apparatus connected to each other via an electric cable. Each of the first and second antenna apparatuses receives a reference pulse from the base station apparatus via the optical cables, and estimates a time difference between the received pulse and the reference pulse supplied from the counterpart antenna apparatus via the electric cable. At least one of the first and second antenna apparatuses adjusts signal transmission timing based on the time differences estimated by the first and second antenna apparatuses.

Abstract: In a system performing a delay measurement between a master device and a slave device, a master device transmits a delay measuring signal at a fixed timing relative to a synchronous pattern signal in an overhead and transmits a frame signal in which an internal delay time, associated with a frame signal generation, from a delay measurement start timing to a transmission timing of the delay measuring signal is stored in the delay measuring signal as a master offset value; and a slave device adds an internal delay time of its own device associated with a frame signal generation to the master offset value after having received the frame signal to make a slave offset value and transmits a frame signal in which the delay measuring signal is updated with the slave offset value; the master device calculates a delay time between both devices by subtracting the slave offset value from a time difference between a timing at which the delay measuring signal within the frame signal transmitted from the slave device is rec

Abstract: A phase matching control system for eliminating a phase offset in parallel transmission comprises a transmitter 222 for transmitting identical data and a receiver 223 for receiving the data, wherein each of transmitting units in the transmitter comprises a frame generating and transmitting unit (30, 35) for generating a frame having a cycle that is not less than twice the maximum predicted delay amount to insert phase information indicating a phase of the frame, and wherein each of receiving units comprises a phase matching unit (103, 104, 112, 113) for receiving the frame and the phase information and, based upon the phase information, outputting corresponding frames in plural transmission channels with matched phases.

Abstract: A phase difference delay control system is provided that enables distance measurement between a reference position and a terminal at the time of recovery after a line has been disconnected as a result of fluctuation of phase difference of block crossover units.