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Gain and phase error-free LINC transmitter

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2 Author(s)
Xuejun Zhang ; Center for Wireless Commun., California Univ., San Diego, La Jolla, CA, USA ; Larson, L.E.

This paper presents a new correction technique for linear amplification with nonlinear component transmitters. During the transmit mode, the algorithm modulates and filters the baseband signal as a normal signal component separator, while during the correction mode, by use of a downconversion mixer, the gain and phase imbalance are measured and compensated by introducing a correction. This system is free of adjacent channel interference during the correction period. Analytical results and simulations demonstrate that this system is sufficient to suppress the out-of-band spectrum for mobile communications

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Vehicular Technology, IEEE Transactions on  (Volume:49 ,  Issue: 5 )