一位元相位鑑別裝置及方法Phase-Discriminating Device and Method

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

098103975

專利證號

I 384759

專利獲證名稱

一位元相位鑑別裝置及方法Phase-Discriminating Device and Method

專利所屬機關 (申請機關)

財團法人國家實驗研究院

獲證日期

2013/02/01

技術說明

本發明提出一個新的突破傳統類比訊號的思維, 以數位觀點為基礎, 發展出僅使用一位元的數位式相位檢測器 (digital phase discriminator, DPD), 來克服傳統上利用正切函數的相位檢測器 (arctangent phase discriminator, APD) 因訊號通過類比數位轉換器 (analog-to-digital-converter, ADC) 過程中的量化效應 (quantization effect) 所產生的誤差. 在無雜訊或低雜訊的環境下, DPD的精確度可以勝過傳統的APD數個order. 在高雜訊的環境下, 我們也提出一個實用的數位式相位檢測器 (noise-balanced digital phase discriminator, NB-DPD) 以克服DPD對雜訊敏感的問題. 如同DPD一樣, NB-DPD在無雜訊或低雜訊的環境下, 達到高精度, 且兩種檢測器所需的運算量皆低於傳統APD. A novel phase discriminator called digital phase discriminator (DPD), is developed based on digital perspective for 1-bit ADC processing receivers. In noiseless or high SNR environments, the proposed DPD achieves high accuracy than that of the typical arctangent phase discriminator (APD) up to several orders with sufficient samples since the accuracy of APD is bounded due to quantization loss. Due to noise-sensitivity property of DPD, a modified DPD called noise-balanced digital phase discriminator (NB-DPD) having both high accuracy property in noiseless (or high SNR environments) and noise robust property is also proposed.

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