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Preamble and Cell Search Design for 802.16m System - page 18 / 28

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Fast cell search process

Obtain time and frequency synchronization;

Take N-point FFT to the receives data to get the frequency domain data at NG sub-carriers; denote the NG frequency data with Y(m), m=1,…, NG;

The peak position nmax of Y(m) gives information about u:

The identified u is the integer closest to     calculated by the above formula;

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