軟體無線電數位電視廣播接收器交遞式通道估測與通道編碼的實現

Iterative Channel Estimation and Iterative Channel Decoding for PC-Based Software Radio DVB-T Receive

汪詩恩(Shin-En Wang)

指導教授 ： 曾恕銘

國立臺北科技大學/電資學院/電腦與通訊研究所/碩士(2010年)

https://doi.org/10.6841/NTUT.2010.00106

摘要

在這論文中，我們提出使用於數位電視廣播接收器測試平台的交遞式通道估測與通道編碼。在交遞通道編碼中，Viterbi和RS解碼器可有效地更正錯誤。所以我們可以得到RS封包的正確性。這些資訊將會幫助我們重新選擇一個最大的權重，在軟式的Viterbi解碼器使錯誤訊號有最大的距離。我們提出以一種以交遞通道編碼為基礎，延伸出來的交遞通道估測。通道編碼的結果可利用來當作額外的領航訊號。聯合額外與原本的領航訊號，我們可以經由通道估測，來得到準確的通道響應。

關鍵字

數位電視廣播 ； 交遞通道估測與通道解碼 ； 導航訊號

並列摘要

In the thesis, we propose iterative channel estimation and iterative channel decoding for a PC-based software Digital Video Broadcasting- Terrestrial (DVB-T) receiver testbed. In iterative channel decoding, Viterbi and RS decoder could efficiently correct those errors. So we could know correctness of RS packets from RS decoder. That information would help us to re-choice maximum metric to make the error symbols have maximum distance in soft Viterbi decoder. Then we proposed iterative channel estimation algorithm which base on iterative channel decoding. The result of iterative channel decoding can be used as addition pilot symbols. Joint those pilots and original DVB-T pilots, we can get accurate channel response by channel estimation.

並列關鍵字

DVB-T ； Iterative channel estimation and iterative channel decoding ； Pilot

參考文獻

[1]Sinem Coleri, Mustafa Ergen, Anuj Puri, and Ahmad Bahai, “Channel Estimation Techniques Based on Pilot Arrangement in OFDM Systems”, IEEE Transactions on Broadcasting, Vol. 48, No. 3, pp.223-229, Sept. 2002.

[3]Yueqian Li, Masoud Salehi, “An efficient decoding algorithm for concatenated RS-convolutional codes”, in Proc Information Sciences and Systems, 2009. CISS 2009. 43rd Annual Conference on, 18-20 March 2009, pp.411-413.

[5]G. Bosco, G. Montorsi, and S. Benedetto, “A New Algorithm for “Hard” Iterative Decoding of Concatenated Codes”, IEEE Transactions on Communications, Vol. 51, No. 8, pp.1229-1232, Aug. 2003.

[7]王經文, ”Implementation of the DVB-T Receiver For Baseband Processing Algorithms ”, 國立台北科技大學碩士論文, 2007。

[2]Shu-Ming Tseng, Yan-Ting Li, and Yueh-Teng Hsu, “Improved Channel Estimation for PC-Based Software Radio DVB-T Receiver”, in Proc. the 5th International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM2009), Beijing, China, 24-26 September, 2009, pp. 1-4.