Title:
TRANSMISSION SYSTEM AND RECEIVER
Document Type and Number:
Japanese Patent JP3522347
Kind Code:
B2
Abstract:
PURPOSE: To provide a transmission system with which an equalizing function is improved without increasing complexity.
CONSTITUTION: In the transmission system, a digital symbol ak is supplied to a transmitter 2 provided with a low-pass filter 50 and and a frequency modulator 52. The output signal of transmitter 2 is transmitted through a channel 4 to a receiver 6. After the received signal is filtered by a band pass filter 54, this signal is demodulated by a frequency demodulator 56 and a demodulated signal is provided. In order to suppress a noise signal to be increased together with a frequency by a power spectrum, a predetection filter 60 is provided between a subtraction circuit 58 and a detector 62. In order to compensate inter-code interference generated by the pre-detection filter 60, the version scaled as a symbol a'k is supplied to the 2nd input of subtraction circuit 58.
Inventors:
Russell, Mark A.
Sluijter, Robert J.
Bergmans, Johannes W. M.
Sluijter, Robert J.
Bergmans, Johannes W. M.
Application Number:
JP21928194A
Publication Date:
April 26, 2004
Filing Date:
September 13, 1994
Export Citation:
Assignee:
PHILIPS ELECTRON NV
International Classes:
H04L27/12; H04L25/03; H04L27/14; (IPC1-7): H04L27/12; H04L27/14
Attorney, Agent or Firm:
伊東 忠彦