DC offset correction for constant modulus equalization
作者： Haosong Fu , Azzédine Touzni , Raúl A. Casas , Thomas J. Endres , Christopher H. Strolle
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摘要: A single-axis receiver processes, for example, a complex vestigial sideband (VSB) modulated signal with an equalizer accounting DC offset within the signal. The embedded in received may degrade process of equalization. includes method blind estimation removing offset. estimate is generated by jointly minimizing Constant Modulus (CM) cost function over parameters and estimate. An arbitrary CM admits local spurious minima terms function. If at equal to inserted transmitter, which equivalent neglecting ISI caused channel, then only half remain unchanged. Provided power constraint on space satisfied, estimate, computed joint optimization function, converges desired solution, and, thus, are guaranteed converge solution.
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