| CPC H04B 7/0845 (2013.01) [H04B 1/126 (2013.01); H04B 7/002 (2013.01); H04L 5/14 (2013.01)] | 32 Claims |
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1. A communication system comprising:
a transmitter comprising transducer and an antenna, wherein the transducer is configured to combine a first polarized signal and a second polarized signal to yield a combined signal to provide to the antenna for transmission, the first polarized signal having a right-hand circular polarization and the second polarized signal having a left-hand circular polarization; and
a receiver comprising a cross-polarization interference compensation (XPIC) module having a first input line and a second input line and a first output line and a second output line, wherein the XPIC module is configured to receive, based on receipt of the combined signal, a first down-converted digital polarized signal associated with the first polarized signal at the first input line and a second down-converted digital polarized signal associated with the second polarized signal at the second input line,
wherein the XPIC module comprises a first complex-valued finite impulse response (FIR) filter configured to receive the second down-converted digital polarized signal and output a correction factor that cancels cross-polarization components in the first down-converted digital polarized signal, and
wherein the XPIC module is configured to generate a first corrected polarized signal based on the first down-converted digital polarized signal and the correction factor and to provide the first corrected polarized signal at the first output line.
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