MC-CDMA system, transmitter and receiver

Details MC-CDMA system, transmitter and receiver MC-CDMA system, transmitter and receiver

2007-01-17

2011-11-08

Vo, Don N (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S260000

Reexamination Certificate

active

08054866

ABSTRACT:
A MC-CDMA transmitter and an MC-CDMA receiver are provided, which use a novel orthogonal spreading code that allows an effect by a delay wave to appear in only a specific user. An MC-CDMA system includes: a transmitter which multiplies a transmitting signal by a sinusoidal signal which has an amplitude of r and is orthogonal as a result that the frequency periods are different among users, in a frequency domain to be spread and split into orthogonal sub-carriers, and multiplexes the sub-carriers; and a receiver for receiving a transmitting signal from the transmitter in a manner that a sinusoidal signal, which has an amplitude of r and is orthogonal as a result that the frequency periods are different among users, is multiplied by the transmitting signal in a frequency domain, and the resultant is inversely spread.

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