Qam with dc bias in one channel

Details Qam with dc bias in one channel Qam with dc bias in one channel

H - Electricity

04

L

325/27

H04L 27/02 (2006.01) H04L 27/34 (2006.01) H04L 27/36 (2006.01) H04L 27/38 (2006.01)

Patent

CA 1217233

RADIO COMMUNICATION SYSTEM ABSTRACT OF THE DISCLOSURE A radio communication system comprised of a trans- mitter unit, a transmission line, and a receiver unit. The transmitter unit modulates an in-phase-channel (I-ch) data signal and quadrature-channel (Q-ch) data signal with two carriers having ? phase difference with each other. A DC offset is added to either one of the I-ch and Q-ch data signals before the modulation. In the receiver unit, a demodulation operation is performed for the received transmission signal through a synchronous detection with the use of a leakage carrier created due to the DC offset and included in the trans- mission signal.

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