DEVICE FOR EQUIPMENT FOR FORMING DIGITAL RADIO FREQUENCY BROADCASTING TRANSMISSION LINE BETWEEN FIXED BROADCASTING UNIT AND MOBILE BROADCASTING UNIT

摘要

PURPOSE: To reduce additional energy included in the pilot contents of transmitted signals to a minimum value. ;CONSTITUTION: A RaKe finger 20 is constituted of a signal correlation device 2 for processing the common mode components 1 of the signals, the signal correlation device 4 for processing quadrature phase components Q, half linear multipliers 6 and 8 connected to them, Wiener filters 14 and 16 and an addition circuit 18 further. The addition circuit 18 is connected to another addition circuit 28. The addition circuit is connected to the respective addition circuits of the other RaKe fingers 22, 24 and 26 and the output side is connected to a hard limiting device 30. The output side of the limiting device is feedback-connected to the half linear multipliers of the respective RaKe fingers. Data output is obtained from the addition circuit 28. A predicted value is combined in an adder 34 through the RaKe fingers 20, 22, 24 and 26 so as to form the prediction of the entire reception energy, the received predicted value is stored in a shift register 35 and the minimum value of the contents of the shift register 35 is obtained.;COPYRIGHT: (C)1995,JPO