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Method for correlation directed echo cancellation and channel equalization for the digital transmission link in vestigial side band amplitude modulation
Method for correlation directed echo cancellation and channel equalization for the digital transmission link in vestigial side band amplitude modulation
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机译:残留边带幅度调制中数字传输链路的相关定向回波消除和信道均衡的方法
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摘要
A method for determining and reducing or eliminating mid-range and long-rang echoes in the digital data transmission (in ATSC VSB system) is described. A portion of an ATSC VSB television signal is separated from the rest of the signal, certain values are set to zero and it is correlated with a first vector of data. The result of the correlation represents a channel model as affected by echoes within the channel, and then a second vector of data is added to it to derive correction information useful in positioning moveable filter taps to suppress the most prominent echoes.
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