本文選題：信道編碼 + 盲識(shí)別��； 參考：《中國(guó)科學(xué)技術(shù)大學(xué)》2009年碩士論文

【摘要】： 信道編碼盲識(shí)別是在未知編碼信息的條件下,僅根據(jù)未知的編碼數(shù)據(jù)快速識(shí)別編碼體制及其參數(shù),是非協(xié)作通信中的一個(gè)關(guān)鍵技術(shù)。在未來(lái)的智能移動(dòng)通信、多點(diǎn)廣播通信中,將廣泛采用自適應(yīng)調(diào)制編碼技術(shù),隨著時(shí)間和環(huán)境的變化需要隨時(shí)改變信道編碼方式,以便獲得最優(yōu)的通信效率和服務(wù)質(zhì)量,為了在收發(fā)雙方快速建立通信連接,需要接收方僅根據(jù)接收的未知數(shù)據(jù)快速識(shí)別出信道編碼的體制、參數(shù),以達(dá)到智能通信的目的,這也需要利用信道編碼盲識(shí)別技術(shù)。 信道編碼盲識(shí)別是一個(gè)比較專業(yè)的研究領(lǐng)域,目前公開發(fā)表的文獻(xiàn)資料很少,并且主要集中在對(duì)卷積碼的盲識(shí)別,是一個(gè)極具挑戰(zhàn)性的研究課題。本文總結(jié)了信道編碼盲識(shí)別技術(shù)的研究現(xiàn)狀,介紹了幾種卷積碼盲識(shí)別方法并分析了它們的優(yōu)缺點(diǎn),針對(duì)其不足提出了改進(jìn)算法和實(shí)現(xiàn)方案,仿真實(shí)驗(yàn)表明,改進(jìn)算法提高了卷積碼的盲識(shí)別性能,取得了預(yù)定效果。本文的所做的主要工作總結(jié)如下: 本文主要研究方向是卷積碼的盲識(shí)別,首先通過(guò)對(duì)[n,k]系統(tǒng)線性分組碼的線性特征進(jìn)行分析,基于系統(tǒng)分組碼線性特征,建立了線性分組碼盲識(shí)別的原理和方法;其次,分析了線性分組碼和卷積碼的數(shù)學(xué)對(duì)應(yīng)關(guān)系,借鑒系統(tǒng)線性分組碼的盲識(shí)別方法研究了無(wú)誤碼條件下幾類卷積碼的盲識(shí)別問(wèn)題;然后分析了誤碼條件下卷積碼盲識(shí)別性能,探討了一些可能的改善途徑。最后對(duì)全文進(jìn)行總結(jié)展望,提出了進(jìn)一步解決信道編碼盲識(shí)別問(wèn)題的研究方法和思路。
[Abstract]:Blind recognition of channel coding is a key technique in non-cooperative communication, which is based on unknown coding data and fast identification of coding scheme and its parameters only on the condition of unknown coding information. In the future intelligent mobile communication, multi-point broadcast communication, adaptive modulation coding technology will be widely used. With the change of time and environment, the channel coding method needs to be changed at any time in order to obtain the optimal communication efficiency and quality of service. In order to establish the communication connection between the receiver and receiver quickly, it is necessary for the receiver to quickly identify the system and parameters of channel coding only according to the unknown data received, so as to achieve the purpose of intelligent communication. This also requires the use of blind identification technology of channel coding. Channel coding blind recognition is a relatively professional research field. There are few published literature and mainly focus on the blind recognition of convolutional codes, which is a challenging research topic. This paper summarizes the research status of blind recognition technology of channel coding, introduces several blind recognition methods of convolutional codes, analyzes their advantages and disadvantages, and puts forward an improved algorithm and implementation scheme for their shortcomings. The simulation results show that, The improved algorithm improves the blind recognition performance of convolutional codes and achieves predetermined results. The main work of this paper is summarized as follows: The main research direction of this paper is blind recognition of convolutional codes. Firstly, by analyzing the linear characteristics of linear block codes in [NK] system, based on the linear features of block codes, the principle and method of blind recognition of linear block codes are established. The mathematical correspondence between linear block code and convolutional code is analyzed, and the blind recognition problem of several convolutional codes without error code is studied by using the blind recognition method of system linear block code, and then the blind recognition performance of convolutional code under error code condition is analyzed. Some possible ways of improvement are discussed. Finally, the paper summarizes and looks forward to the research method and train of thought of further solving the blind recognition problem of channel coding.
【學(xué)位授予單位】：中國(guó)科學(xué)技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2009
【分類號(hào)】：TN911.2

【引證文獻(xiàn)】

相關(guān)期刊論文 前3條

1 陳金杰;楊俊安;;基于碼重信息熵低碼率線性分組碼的盲識(shí)別[J];電路與系統(tǒng)學(xué)報(bào);2012年01期

2 陳金杰;楊俊安;;基于比特頻率檢測(cè)低碼率線性分組碼的盲識(shí)別[J];電子測(cè)量與儀器學(xué)報(bào);2011年07期

3 陳金杰;楊俊安;;無(wú)線數(shù)傳信號(hào)編碼盲識(shí)別與解碼技術(shù)研究[J];電子測(cè)量與儀器學(xué)報(bào);2011年10期

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本文編號(hào)：1844300