Downstream synchronization monitoring apparatus and method for mobile terminal and application thereof
A mobile terminal and monitoring device technology, which is applied to synchronization devices, transmission monitoring, transmission channel monitoring, etc., can solve problems such as excessive synchronization offset, synchronization adjustment tracking failure, synchronization tracking failure, etc., to reduce costs and power consumption, Avoid the effect of system communication quality degradation
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[0028] The structure of the downlink synchronization monitoring device used in the present invention is as follows figure 2 As shown, it is composed of a channel estimator, a center of gravity estimator, a smoothing filter, a subtractor, a comparator, a decision device, a register, and a delay.
[0029] The working process of the downlink synchronization monitoring device of the present invention will be described in detail below.
[0030] First, the channel estimator estimates the channel impulse response sequence according to the received data of the nth frame
[0031] The center of gravity estimator calculates the channel impulse response sequence The center of gravity B of the channel response of the nth frame c (n) (Average delay value of channel multipath power);
[0032] The smoothing filter smoothes and filters the center of gravity value of the channel response for several consecutive frames to eliminate the influence of noise and instantaneous small fluctuations, and ...
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