| 摘要 |
In a diversity communication system, arrays of antennas and groups of receive units are provided so that the groups correspond respectively to the antenna arrays. The receive units of each group respectively process incoming signals from the antennas of the corresponding array. Associated respectively with the antenna arrays are diversity branches each comprising multiple complex multipliers for respectively multiplying the processed incoming signals by weight coefficients, and multiple correlators for determining correlations between the processed incoming signals and a decision signal and deriving therefrom the weight coefficients of the complex multipliers. A predetermined amount of delay is introduced to each of the processed incoming signals so that each delayed signal and the decision signal are time-coincident at the inputs of each complex multiplier. The output signals of.the complex multipliers are summed and fed to an adaptive matched filter for converging delay-dispersed components of the sum signal and maximal-ratio combining the components according to the decision signal to produce an output signal of the diversity branch. The outputs of the diversity branches are combined and applied to a decision feedback equalizer where it is equalized and the decision signal is produced for the correlators and adaptive matched filter of each diversity branch.
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