科技日新月異的進步，行動通訊與多媒體的結合成為必然的趨勢。無線通道相較於有線通道，本身就存在著頻寬窄、雜訊高的缺點，因此在無線通道上面傳送資料時，必須克服這兩種因素，而多輸入多輸出正交分頻多工(MIMO-OFDM)技術為新一代無線通訊技術，也是當前熱門研究的主題之一。本篇的主要研究方向為應用串列渦輪碼(SeriallyConcatenatedConvolutionalCodes,SCCC)於不相等錯誤保護(Unequal Error Protection, UEP)之多媒體傳輸上的應用。不相等錯誤保護我們使用格狀編碼調變 (Trellis Coded Modulation,TCM) 與非均勻QAM (Non-uniform QAM) 來實現我們所提出的構思，並且加入串列渦輪碼來提升無線傳輸的錯誤更正能力，利用渦輪編碼後的資料特性，分別映射至非均勻QAM上。MIMO-OFDM的訊號偵測我們將分析比較在不相等錯誤保護上各種訊號偵測技術的效能，如強制歸零(zero-forcing)、貝爾實驗室垂直分層空時(V-blast )、QR貝爾實驗室垂直分層空時(QR-blast)、最大相似搜尋法(Maximum likelihood search)這幾種方法。在此分析下我們可以找出位元錯誤率(BER)較低，適合不相等錯誤保護架構的訊號偵測方法。我們以16-QAM調變規格在具符元干擾通道與AWGN通道狀況下來做效能模擬。

The rapid advances in technology , the combination of mobile communication and multimedia has become an inevitable trend. Compared to cable channel wireless channel, the existence of a narrow bandwidth , high noise disadvantage , so the wireless channel when transmitting information, these two factors must be overcome , and the MIMO-OFDM technology for the next generation of wireless communications technology , and the current hot research topic . The main research direction for the use of SCCCon unequal error protectionon (UEP) the application of multimedia transmission . We use unequal error protection trellis coded modulation (TCM) and non-uniform QAM to implement the proposed idea , adding turbo codes to improve error correction capability of wireless transmission, and the use of turbo encoded data characteristics , mapped to the non-uniform . MIMO-OFDM signal detection analysis we will compare the performance of unequal error protection on various signal detection techniques , such as mandatory zero (zero-forcing), vertical Bell Labs Layered Space-Time (V-blast), QR vertical Bell Labs layered Space-Time (QR-blast), the maximum similarity search method (Maximum likelihood search) this in several ways. In this analysis we can find under the bit error rate (BER) lower for unequal error protection framework of signal detection methods. Our standard 16-QAM modulation symbol interference in a channel with AWGN channel
conditions down to do performance simulation.

第一章 緒論

第二章 非均勻調變技術

第三章 渦輪碼

第四章 H.264/AVC

第五章 多重輸入多重輸出技術簡述

第六章 模擬及分析

第七章 結論

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