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 利用階層式QAM/PSK星座圖所得之比例關係曲線判定通道特性 |
刊登日期：2014/05/21 |
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| ‧ 專利名稱 |
通道估測方法以及收發機 |
| ‧ 專利證書號 |
I403131
8369389
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| ‧ 專利權人 |
國立臺灣大學 |
‧ 專利國家
(申請日) |
中華民國 (2009/12/15)
美國 (2010/06/03)
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| ‧ 發明人 |
李揚漢 , 蕭以欣 , 吳靜雄 , 曹恆偉, |
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| 技術摘要： |
一種收發機，適用於正交分頻多工系統，包括：一訊號處理裝置，接收一具有階層式調變的複數領航訊號的正交分頻多工符元，並根據正交分頻多工符元處理正交分頻多工符元以產生一處理信號；一領航訊號分析裝置，擷取處理信號中的領航訊號，以及將領航訊號解調變以產生各階層位元；一階層差異分析模組，根據各階層位元產生複數階層差異，並且根據階層差異來判定通道特性以傳送一通道特性估測訊號；以及一通道偵測模組，根據通道特性估測訊號以發送一最佳調變指示訊號至另一收發機中以調整另一收發機的調變方式。
A transceiver used for an orthogonal frequency-division multiplexing (OFDM) system is provided, including: a signal processing device for receiving an OFDM symbol and processing the OFDM symbol to generate a processing signal according to the OFDM symbol, wherein the OFDM symbol having pilots which have been hierarchically modulated; a pilot signal analysis device for collecting the processing pilots of the processing signal and demodulating the processing pilots to generate a plurality of levels where one of the plurality of levels comprises a plurality of refinement bits; a degree difference analysis module for generating a plurality of degree differences according to the refinement bits and detecting channel classification according to the degree differences to transmit a channel classification signal; and a channel detection module for generating and transmitting a best modulation indication signal to another transceiver to adjust modulation scheme according to the channel classification signal.
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聯繫方式 |
| 聯絡人：
研發處產學合作總中心 |
電話：
(02)3366-9949 |
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| 地 址：
10617臺北市大安區羅斯福路四段1號 禮賢樓六樓608室 |
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