At the time of radio transmitting of the data assistant of quick standard and do phase error compensation the device and the manner

摘要

PURPOSE: To quickly catch a phase by finding out the correlation of replicas in a local part and totalizing the replicas as a pair of mutually exclusive products at the time of receiving a quadrature phase signal in a digital radio receiver for receiving a data signal time slot modulated to a quadrature phase by a time-divided multiplex access. CONSTITUTION: A signal 1 modulated to quadrature phase is received from an OPSK transmitter 101 and sent to a receiver 103. Although a quadrature modulated QSPK is used for increasing the through-put of a channel, the use of a multi-dimensional signal and a time-divided multiplex access(TDMA) is also available. For instance, digital signal outputs from A/D converters 209, 211 are applied to a time slot correlator 213 and a quadrature phase correlator 215, correlation functions are prepared by using a quadrature phase synchronizing word and sampled data stored in a memory and respectively applied to square units 223, 225, and outputs from these units 223, 225 are totalized by a totalizer 227 and outputted to the external.