摘要 |
In a slot timing detection method, only data of power values, of power values at points as the ordinal numbers of data, which fall within upper N power values in a decreasing order of power values are stored, and the Nth data is as a threshold. The thresholds in the slot intervals are accumulated to obtain a base value. Only predetermined M data of the data of the power values are stored in correspondence with point information. When data corresponding to the points corresponding to the N data fall within the M data, currently obtained data is added to the data at each point to generate new data. When data corresponding to the points corresponding to the N data fall outside the M data, currently obtained data is added to the base value to generate new data. New data is generated by adding the threshold to data, of the M data, which corresponds to a point where no data falls within the N data. When the number of generated data is M or more, only upper M data are stored together with point information. When slot averaging is performed a predetermined number of times, the M data is divided by the predetermined number and the quotient is as an average value. A slot timing detection circuit, a mobile station, and a mobile communication system are also disclosed. <IMAGE> |