| 主权项 |
1. An IQ swap detector, comprising:
a first correlator circuit, receiving a first conjugated symbol stream and a received symbol stream, and calculating a first correlation value between the received symbol stream and the first conjugated symbol stream, wherein the received symbol stream is generated by a transmission of a known symbol stream through a transmission channel, and the first conjugated symbol stream is conjugate complex of the known symbol stream; a second correlator circuit, receiving the first conjugated symbol stream and a second conjugated symbol stream, and calculating a second correlation value between the first conjugated symbol stream and the second conjugated symbol stream, wherein the second conjugated symbol stream is conjugate complex of the received symbol stream; and a comparator circuit, coupled to the first correlator circuit to receive the first correlation value, coupled to the second correlator circuit to receive the second correlation value, and determining whether an in-phase component and a quadrature component in the received symbol stream are swapped according to a relationship between the first correlation value and the second correlation value, wherein the first conjugated symbol stream and the received symbol stream are in time-domain. |
