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適用於頻選式衰落通道環境之本質性多樣性分集助益之起始時頻同步系統 Initial Synchronization Assisted by Inherent Diversity over Time-Varying Frequency-Selective Fading Channels
專利名稱 在時變與頻率選擇衰變通道環境中利用本質上的分集進行初始同步的方法與裝置INITIAL SYNCHRONIZATION METHOD AND APPARATUS ASSISTED BY INHERENT DIVERSITY OVER TIME-VARYING FREQUENCY-SELECTIVE FADING CHANNELS
申請日 (校編號) 2015/04/28  (103053US)
2014/10/31  (103053TW)
專利證書號 9,419,785 美國
I559724 中華民國
專利權人 國立中央大學
發明人 林嘉慶、孫郁婷


技術摘要:
The present invention relates to an initial synchronization apparatus assisted by inherent diversity over time-varying frequency-selective fading channels. Based on motivation from statistical derivations, the present invention provides a novel initial synchronization method for estimating timing error and carrier frequency offset (CFO) by embedding matched filters into RAKE fingers to approach modified CramerRao lower bounds (MCRLBs). In addition, the present invention is then built to approach modified CramerRao lower bounds by taking advantage of a maximum ratio combining (MRC) criterion. In practice, the proposed technique can significantly outperform a conventional initial synchronization technique on the timing error and CFO estimations over multipath fading channels.

解決的問題或達成的功效:
An object of the present invention is to provide an initial synchronization method and apparatus assisted by inherent diversity over time-varying frequency-selective fading channels, wherein the more precise estimation of timing error and frequency offset is achieved based on the rake architecture.

應用領域:
an initial synchronization method and apparatus.

適用產品:
pulse shaping filter

IPC:
H04L27/2657;H04L7/0087; H04B1/707;H04L7/0004; H04L7/0058;H04L27/2662; H04L27/2671;H04L27/2675;H04L27/2688;H04L27/2695;H04L7/10

Claim 1:
An initial synchronization apparatus for receiving a received signal comprising a training sequence, the initial synchronization apparatus comprising

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