Patent ID: 7474713
Filing Date: 2009-01-06
Classification: H04L

Abstract:
1. A system, comprising: a first oscillator that produces first and second signals, the first signal having a frequency that is phase separated 90 degrees from a frequency of the second signal; a second oscillator that produces third and fourth signals, the third signal having a frequency that is phase separated 90 degrees from a frequency of the fourth signal; a first demodulator that receives the first and second signals and a carrier signal, the first demodulator generating a first pair of demodulated signals therefrom; a second demodulator that receives the third and fourth signals and the first pair of demodulated signals, the second demodulator generating a second pair of demodulated signals therefrom; and a third demodulator that receives the third signal and the first and second pair of demodulated signals, the third demodulator generating a third pair of demodulated signals therefrom, wherein the first, second and third pair of demodulated signals are transmitted along first, second, and third channels, respectively.