Title:
TRANSMISSION METHOD OF DATA GROUP, TRANSMITTER AND RECEIVER BASED THEREON
Document Type and Number:
Japanese Patent JPH06252878
Kind Code:
A
Abstract:
PURPOSE: To transmit modulated data by S/P converting a data group, operating inverse high speed Fourier transformation, delaying and repeatedly extending one data, multiplying each data from each symbol with different coefficients, and adding them to frequency multiplex at a low symbol rate. CONSTITUTION: An S/P converter 1 S/P converts a data group I, an inverse high speed Fourier transformer 2 operates inverse high speed Fourier transformation, and a delay circuit 4 delays and repeatedly extends one data. Shift registers 7 and 8 are provided with N pieces of coefficient train synchronizing with a symbol rate, and a multiplier 3 multiplies the output of the converter 2 which the different coefficients from the register 6. Also, a multiplier 5 multiplies an extended transformed group outputted from the circuit 4 with the different coefficients from the register 7, an adder 8 adds the outputs of the multipliers 3 and 5, and outputs it to an output stage 9. Thus, the modulated data of a carrier frequency-multiplexed a relatively low bit rate can be transmitted, and the device can be simplified and inexpensive.
Inventors:
ARII GEERUTO KORUNERISU KOTSUP
KONSUTANTO POORU MARII YOZEFU
KONSUTANTO POORU MARII YOZEFU
Application Number:
JP3659294A
Publication Date:
September 09, 1994
Filing Date:
February 08, 1994
Export Citation:
Assignee:
PHILIPS ELECTRONICS NV
International Classes:
H04B1/04; H04B1/10; H04B7/005; H04J11/00; H04L27/26; (IPC1-7): H04J11/00; H04B1/04; H04B1/10; H04B7/005
Attorney, Agent or Firm:
Masao Sawada
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