需要金幣： 1000 個金幣 |
資料包括：完整論文 |  |
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| 轉換比率：金額 X 10=金幣數量， 例100元=1000金幣 | 論文字數：29頁 |  | |
| 折扣與優惠：團購最低可5折優惠 - 了解詳情 | 論文格式：Adobe Reader格式(*.pdf) |  |
摘要:結合了OFDM和傳統CDMA技術的多載波CDMA(MC-CDMA)系統是未來移動通信系統一種很有應用前景的候選方案，相當多的專家學者都在對它進行研究。它繼承了OFDM和CDMA技術的優良特性，具有頻譜效率高、抗ISI能力強等優點，以及在高速率多媒體數據傳輸方面有獨特的優勢，所以被認為是未來4G通信的核心技術。另外，其調制／解調部分可采用離散傅立葉變換，通過數字信號處理(DSP)技術實現，符合向軟件無線電發展的趨勢，成為近幾年研究的熱點之一。 本論文將從多個方面逐步深入地對MC-CDMA系統的單用戶檢測技術進行研究，分析了MC-CDMA建立了其在高斯白噪聲信道和多徑信道下發射和接收的統一數學模型，介紹MC-CDMA的原理和多載波CDMA技術，移動信道的原理和特點，還有單用戶檢測的原理與分類，單用戶檢測技術的原理與優缺點，概括了各種單用戶檢測技術，對采用單用戶檢測EGC和MRC的MC-CDMA系統的誤碼率性能分別進行了分析和仿真。 本論文還將介紹MC-CDMA多用戶系統檢測技術的發展趨勢。 關鍵詞：MC-CDMA，移動信道，單用戶檢測EGC，單用戶檢測MRC
Abstract:Combined with the traditional CDMA technology and OFDM Mc-cdma (Mc-cdma) system is the future of mobile communication system a good application prospect of the candidate scheme, quite a number of experts and scholars in all its study. It inherits the OFDM and CDMA technology excellent characteristics, has the spectrum efficiency, strong ability of ISI advantages, such as high rate and the multimedia data transmission is the special advantage, it's considered the future 4 G the core technology of the communication. In addition, the modulation/demodulation part can use discrete Fourier transform, through the digital signal processing (DSP) technology to achieve, to comply with the trend of the development of the software radio, has become one of the hot spot in the research. This paper will be gradually deeply from several aspects of Mc-cdma system of single user detection technology, this paper analyzes the Mc-cdma established its in gaussian white noise channel and multipath channel transmit and receive under the unity of the mathematical model, this paper introduces the principle and Mc-cdma Mc-cdma technology, mobile channel principle and characteristics, and single user detection principle and the classification, single user testing technology and the principle of the advantages and disadvantages, and summarized the various single user testing technology, to the single user testing EGC and the MRC Mc-cdma system ber performance separately carried on the analysis and simulation. This paper will introduce Mc-cdma multi-user system testing technology development trend. Key words: Mc-cdma, mobile channel, single user testing EGC, single user testing MRC
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