Transmitter and receiver for orthogonal frequency division multi

Details Transmitter and receiver for orthogonal frequency division multi Transmitter and receiver for orthogonal frequency division multi

1996-05-22

1998-05-26

Ton, Dang

Multiplex communications

Generalized orthogonal or special mathematical techniques

Quadrature carriers

375261, H04K 110

Patent

active

057577668

ABSTRACT:
In a communication system, the energy of each bit of the inputted information bit string is diffused over the whole frequency band of the orthogonal carriers, and the energy of the plural bits is multiplexed onto each orthogonal carrier, As a result, even though frequency selective fading has occurred attenuation value of the energy of each bit is some remarkable degrading of the error rate can be alleviated, and changing of the data rate can be easily accommodated by modifying the number of the code multiplexing. In this way, a communication system can be realized which is able to alleviate the performance deterioration due to frequency selective fading, and to easily cope with a modification of the data rate.

REFERENCES:
patent: 5488632 (1996-01-01), Mason et al.
patent: 5537396 (1996-07-01), Kanda et al.

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