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Mobile WiMAX is a wireless protocol for broadband wireless access that utilizes TDD OFDMA. The WiMAX frame begins with a preamble symbol that establishes frame timing and initial symbol timing for the mobile. In a mobile, the preamble symbol detection is often accomplished by a delay correlation detector. Delay correlation detectors take advantage of the preamble symbols redundancy. Previous detection methods tend to focus on high SNR environments and when applied to Mobile WiMAX a small model mismatch exists. Mobile WiMAX is being deployed with frequency reuse factors of 1 or 3. The resulting RF environment often contains heavy noise and interference.
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