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Filter Size Determination for Differential Detectors with Moving Average Filters  

Rim, Min-Joong (Department of Information and Communication Engineering, Dongguk University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.43, no.10, 2006 , pp. 60-68 More about this Journal
Abstract
OFDM(Orthogonal Frequency Division Multiplexing) is widely used in wideband wireless communication systems due to its excellentperformance. One of the most important operations in the OFDM receivers is preamble detection. This paper presents a differential detection method with moving average filter, which is similar to extended differential detection, and a filter determination method to achieve the best performance invarious environments. The proposed method show that the optimal filter size decreases as the delay spread increases and as the signal-to-noise ratio increases.
Keywords
OFDM; Preamble Detection; Cell Search; Differential Detection; Moving Average Filter; Filter Size Determination;
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