發(fā)布時(shí)間：2018-01-01 20:16

  本文關(guān)鍵詞：CC-CDMA的碼構(gòu)造及系統(tǒng)設(shè)計(jì)方法　出處：《哈爾濱工業(yè)大學(xué)》2016年博士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 碼分多址 互補(bǔ)碼 檢測(cè)算法 頻率選擇性衰落信道

【摘要】：在無(wú)線通信系統(tǒng)中,多址技術(shù)決定了用戶(hù)如何共享系統(tǒng)的頻譜資源。得益于其優(yōu)異的特性,碼分多址在第二代和第三代移動(dòng)通信系統(tǒng)中獲得廣泛應(yīng)用。在碼分多址無(wú)線通信系統(tǒng)中,擴(kuò)頻碼的相關(guān)特性至關(guān)重要,擁有理想相關(guān)特性的擴(kuò)頻碼可以大大簡(jiǎn)化系統(tǒng)的復(fù)雜度,并且可獲得完全頻譜利用效率。然而,具有一維結(jié)構(gòu)的傳統(tǒng)擴(kuò)頻碼無(wú)法實(shí)現(xiàn)理想的相關(guān)特性,使得傳統(tǒng)碼分多址無(wú)線通信系統(tǒng)必須依賴(lài)復(fù)雜的輔助子系統(tǒng),如開(kāi)環(huán)／閉環(huán)功率控制、Rake接收機(jī)、速率匹配、上行鏈路同步控制等。不同于傳統(tǒng)擴(kuò)頻碼,具有二維結(jié)構(gòu)的互補(bǔ)碼可以實(shí)現(xiàn)理想的相關(guān)特性,于是提出用于構(gòu)建下一代碼分多址無(wú)線通信系統(tǒng)�；パa(bǔ)碼的理想相關(guān)特性使得基于互補(bǔ)碼的下一代碼分多址技術(shù)不再受多徑和多址干擾影響,從而擺脫傳統(tǒng)碼分多址無(wú)線通信系統(tǒng)中的各種復(fù)雜的輔助子系統(tǒng),因此,是未來(lái)蜂窩移動(dòng)通信系統(tǒng)中富有競(jìng)爭(zhēng)力的技術(shù)之一。另外,在國(guó)防和航天等特殊領(lǐng)域,互補(bǔ)碼的理想相關(guān)特性也使得基于互補(bǔ)碼的碼分多址技術(shù)具有極大的應(yīng)用價(jià)值。盡管研究人員已驗(yàn)證在高斯白噪聲信道和平坦慢衰落信道環(huán)境下基于互補(bǔ)碼的碼分多址(CC-CDMA)無(wú)線通信系統(tǒng)不受多用戶(hù)干擾影響,但由于互補(bǔ)碼的二維結(jié)構(gòu),頻率選擇性慢衰落信道使得CC-CDMA無(wú)線通信系統(tǒng)面臨著巨大的挑戰(zhàn)。另一方面,互補(bǔ)碼的集大小決定了CC-CDMA無(wú)線通信系統(tǒng)可支持的最大用戶(hù)個(gè)數(shù),然而具有理想相關(guān)特性的互補(bǔ)碼的集大小較小,會(huì)限制CC-CDMA無(wú)線通信系統(tǒng)的實(shí)際應(yīng)用。因此,本文主要圍繞這兩個(gè)方面展開(kāi)研究,重點(diǎn)研究了頻率選擇性慢衰落信道下的檢測(cè)算法、抗信道頻率選擇衰落的互補(bǔ)碼的構(gòu)造方法及傳輸系統(tǒng)、以及可以支持更多用戶(hù)的互補(bǔ)碼的構(gòu)造方法及傳輸系統(tǒng),研究結(jié)果對(duì)于CC-CDMA無(wú)線通信系統(tǒng)的實(shí)際應(yīng)用具有重要價(jià)值。具體研究?jī)?nèi)容和成果如下：針對(duì)采用理想相關(guān)互補(bǔ)碼和傳統(tǒng)相關(guān)檢測(cè)接收機(jī)的CC-CDMA無(wú)線通信系統(tǒng)進(jìn)行研究。首先描述了兩種具有理想相關(guān)特性的互補(bǔ)碼——完全互補(bǔ)碼和超級(jí)互補(bǔ)碼的產(chǎn)生方法。接下來(lái),基于子信道平坦衰落的信道模型和收發(fā)機(jī)模型,建立了接收機(jī)相關(guān)檢測(cè)前子信道輸出信號(hào)的向量表達(dá)形式。然后,基于各子信道輸出的接收向量,分析了平坦慢衰落信道、頻率選擇性慢衰落信道、平坦快衰落信道、以及碼片不同步情況下采用理想相關(guān)互補(bǔ)碼和傳統(tǒng)相關(guān)檢測(cè)接收機(jī)的CC-CDMA無(wú)線通信系統(tǒng)的性能。分析和仿真結(jié)果表明,信道的頻率選擇性衰落和時(shí)間選擇性衰落會(huì)破壞用戶(hù)間的正交性,引入多用戶(hù)干擾。針對(duì)頻率選擇性慢衰落信道下CC-CDMA無(wú)線通信系統(tǒng)中的檢測(cè)算法進(jìn)行研究,分別為下行通信和上行通信提出了基于最小均方誤差準(zhǔn)則的單用戶(hù)檢測(cè)算法和多用戶(hù)檢測(cè)算法。對(duì)于下行通信,基于單用戶(hù)檢測(cè)接收機(jī)結(jié)構(gòu),提出了子載波級(jí)MMSE和用戶(hù)級(jí)MMSE單用戶(hù)檢測(cè)算法,相比于正交恢復(fù)合并和最大比合并檢測(cè)算法,它們既不是噪聲受限的,也不是干擾受限的。對(duì)于上行通信,基于多用戶(hù)檢測(cè)接收機(jī)結(jié)構(gòu),提出了子載波聯(lián)合MMSE-MUD和子載波獨(dú)立MMSE-MUD多用戶(hù)檢測(cè)算法。仿真結(jié)果驗(yàn)證了基于最小均方誤差的單用戶(hù)檢測(cè)接收機(jī)和多用戶(hù)檢測(cè)接收機(jī)具有優(yōu)異的誤碼率性能。針對(duì)頻率選擇性慢衰落信道下互補(bǔ)碼的構(gòu)造進(jìn)行研究,提出了抗頻選互補(bǔ)碼及其傳輸系統(tǒng)。首先討論了不受信道頻率選擇性衰落影響的互補(bǔ)碼的特征,提出了借助Golay互補(bǔ)對(duì)構(gòu)造抗頻選互補(bǔ)碼的方法,并分析了它的相關(guān)特性。其次,針對(duì)下行通信,提出了基于抗頻選互補(bǔ)碼的發(fā)射機(jī)和接收機(jī)結(jié)構(gòu),分析和仿真結(jié)果驗(yàn)證了基于抗頻選互補(bǔ)碼的CDMA下行通信系統(tǒng)中無(wú)多用戶(hù)干擾。針對(duì)上行通信,提出了基于抗頻選互補(bǔ)碼的發(fā)射機(jī)和接收機(jī)結(jié)構(gòu),分析和仿真結(jié)果同樣表明基于抗頻選互補(bǔ)碼的CDMA上行通信系統(tǒng)中無(wú)多用戶(hù)干擾。針對(duì)如何提高互補(bǔ)碼的最大可支持用戶(hù)個(gè)數(shù)進(jìn)行研究,提出了偶位移互補(bǔ)碼及其傳輸方案。相比于具有理想相關(guān)特性的互補(bǔ)碼,偶位移互補(bǔ)碼的最大可支持用戶(hù)個(gè)數(shù)擴(kuò)大一倍。首先闡明偶位移互補(bǔ)碼的思想來(lái)源,并給出偶位移互補(bǔ)碼的概念和相關(guān)特性。接下來(lái),提出了偶位移互補(bǔ)碼的傳輸方案,并證明了結(jié)合該傳輸方案,偶位移互補(bǔ)碼等價(jià)為具有理想相關(guān)特性的互補(bǔ)碼。最后,提出了一種偶位移互補(bǔ)碼——I/Q列式互補(bǔ)碼的構(gòu)造方法,并分別分析了基于I/Q列式互補(bǔ)碼的CDMA下行通信系統(tǒng)和上行通信系統(tǒng)的抗多用戶(hù)干擾性能。仿真結(jié)果表明基于I/Q列式互補(bǔ)碼的CDMA無(wú)線通信系統(tǒng)的誤碼率性能并不差于基于理想相關(guān)互補(bǔ)碼的CDMA無(wú)線通信系統(tǒng)。
[Abstract]:In a wireless communication system, multiple access technology determines the user how to share spectrum resources system. Due to its excellent properties, is widely used in CDMA second and third generation mobile communication system. In the CDMA wireless communication system, the relevant characteristics of the crucial codes, the complexity of the spreading codes have ideal correlation properties can greatly simplify the system, and can achieve full spectrum efficiency. However, the relevant characteristics of the traditional spreading codes with one-dimensional structure cannot achieve the ideal, the traditional CDMA wireless communication system must rely on complex auxiliary subsystems, such as open loop and closed loop power control, Rake receiver, rate matching, uplink synchronization control etc.. Different from the traditional spreading codes, correlation with two-dimensional structure complementary codes can achieve the ideal, then proposed to construct a code Multi access wireless communication system. The ideal characteristics of complementary codes makes a complementary code based on code division multiple access technology is no longer affected by multipath and multiple access interference effects, so as to get rid of the auxiliary system, various traditional CDMA wireless communication system in the future is so complex, one of the bee nest competitive technology in mobile communication system. In addition, in the special field of national defense and aerospace, ideal correlation properties complementary code also makes complementary code based on CDMA technology has great application value. Although researchers have been verified in the Gauss white noise channel and flat fading channel environment based on complementary codes (CC-CDMA) wireless communication system by multi user interference effect, but because of the two-dimensional structure of complementary codes, frequency selective slow fading channel makes the CC-CDMA wireless communication system is facing a huge challenge. On the other hand, Set size of complementary code determines the maximum number of users of CC-CDMA wireless communication system can support, however, has ideal correlation property complementary code set size is small, the application will limit the CC-CDMA wireless communication system. Therefore, this thesis focuses on the two aspects, focusing on the frequency selective slow fading channel detection algorithm the construction method of anti fading channel frequency selection of complementary codes and transmission system, and the construction method can support more users of complementary codes and transmission system, the research results have important value for the practical application of CC-CDMA wireless communication system. The specific research contents and results are as follows: Research on CC-CDMA wireless communication system with ideal correlation complementary code and traditional correlation receiver. First described two has ideal correlation property of complete complementary complementary code Method of generating code and super complementary code. Then, the channel model and the model of flat fading sub channel transceiver based on the established expression vector sub channel output signal receiver correlation detection before form. Then, the received vector of each sub channel output based on the analysis of the flat fading channel, frequency selective slow fading channels, fast flat the fading channel, the performance of CC-CDMA wireless communication system using the ideal complementary code and traditional correlation receiver and chip synchronization condition. Analysis and simulation results show that will destroy the orthogonality between users of the frequency selective fading channel and time selective fading into multi-user interference. For frequency selective slow fading detection algorithm CC-CDMA a wireless communication system in the channel are studied, respectively, and downlink communication uplink communication is proposed based on the minimum mean square error criterion. Single user detection and multiuser detection algorithm for downlink communication, the receiver structure based on single user detection, proposed sub carrier grade MMSE and user level MMSE single user detection algorithm, compared to the orthogonal recovery of maximal ratio combining and detection algorithm, they are neither noise limits, nor for the uplink interference limited. Communication, multiuser detection receiver structure is proposed based on the combination of MMSE-MUD and Zi Zaibo sub carrier independent MMSE-MUD multi-user detection algorithm. The simulation results verify the single user receiver and MMSE multiuser detection receiver has excellent BER performance. Based on research on complementary code structure frequency selective slow fading channel mutual complement and selection, anti frequency transmission system is proposed. First discusses the characteristics are not affected by the frequency selective fading channel complementary code, proposed by Anti frequency selective complemenbary code method for the construction of Golay can complement each other, and analyzes its characteristics. Secondly, aiming at the downlink communication, the transmitter frequency selective anti complementary codes and receiver structure based on the analysis and simulation results show no multiuser interference CDMA downlink communication system against frequency selective complemenbary code based. For the uplink communication, the transmitter frequency selective anti complementary codes and receiver structure based on the analysis and the simulation results also show that no multiuser interference in CDMA uplink communication system anti frequency selective complemenbary code. Based on how to improve the complementary codes can support the number of users of the mutual complement and even shift transmission compared to the scheme. With ideal correlation property of complementary codes, the maximum displacement even complemenbary code can support the number of users doubled. Firstly I displacement complemenbary code ideological source, and give my shift The concept of complementary codes and related characteristics. Then, proposed transmission scheme of double displacement complemenbary code, and it is proved that the combination of the transmission scheme, even equivalent to the mutual complement displacement has ideal correlation property of complementary codes. Finally, this paper proposes a method to construct a mutual complement -- double displacement I/Q column type complementary codes, respectively. Analysis of anti interference performance of CDMA downlink multi-user communication system I/Q column complementary codes and uplink communication system. Based on the simulation results show that the BER performance of CDMA wireless communication system I/Q complementary codes based on CDMA is not bad in a wireless communication system based on ideal cross-correlation complement.

【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：TN929.533

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 朱云龍，，吳彥群;碼分多址數(shù)字蜂窩移動(dòng)通信技術(shù)講座──第二講　碼分多址的概念[J];電信技術(shù);1994年02期

2 張立志,齊詠杰,陸杰青,李彤;高階多載波碼分多址中的峰均功率比分析[J];信息工程大學(xué)學(xué)報(bào);2002年02期

3 宋瑞華;碼分多址[J];有線電視技術(shù);2002年02期

4 廖明,余平,楊士中;兩種多載波碼分多址系統(tǒng)模型的一致性[J];重慶大學(xué)學(xué)報(bào)(自然科學(xué)版);2003年10期

5 陳雷,賈志成 ,王志勤;多相正交序列在光纖碼分多址通信中的應(yīng)用[J];山東電子;2004年01期

6 孫孺石;碼分多址系統(tǒng)的抗干擾分析[J];電信快報(bào);2004年12期

7 孫孺石;碼分多址系統(tǒng)的抗干擾分析[J];移動(dòng)通信;2004年12期

8 肖登坤,張其善,李世鶴;基于碼分多址系統(tǒng)的多級(jí)業(yè)務(wù)接納研究[J];電子學(xué)報(bào);2005年08期

9 方朝曦;劉召偉;王宗欣;;一種群正交頻碼分多址系統(tǒng)[J];通信學(xué)報(bào);2005年12期

10 孫世豪;;高效率的碼分多址通信系統(tǒng)[J];計(jì)算機(jī)與網(wǎng)絡(luò);1976年02期

相關(guān)會(huì)議論文 前10條

1 孫雯;陳建明;章堅(jiān)武;;時(shí)分同步碼分多址系統(tǒng)不同信道下的性能分析[A];浙江省電子學(xué)會(huì)第七次會(huì)員代表大會(huì)暨2007學(xué)術(shù)年會(huì)論文集[C];2007年

2 李紅娟;孫超;;一種碼分多址水聲多用戶(hù)通信系統(tǒng)仿真研究[A];中國(guó)聲學(xué)學(xué)會(huì)2006年全國(guó)聲學(xué)學(xué)術(shù)會(huì)議論文集[C];2006年

3 高紅梅;鄂勇軍;唐小虎;;一種改進(jìn)的MC-CDMA系統(tǒng)[A];2006北京地區(qū)高校研究生學(xué)術(shù)交流會(huì)——通信與信息技術(shù)會(huì)議論文集（上）[C];2006年

4 賈志成;周宇翔;趙曉群;;多相序列的相關(guān)性研究[A];現(xiàn)代通信理論與信號(hào)處理進(jìn)展——2003年通信理論與信號(hào)處理年會(huì)論文集[C];2003年

5 盧邵平;何婕;任剛;徐家品;楊萬(wàn)全;陳冰海;;多載波碼分多址(MC-CDMA)均衡方案性能比較[A];四川省通信學(xué)會(huì)2003年學(xué)術(shù)年會(huì)論文集[C];2003年

6 李少謙;;CDMA碼分多址移動(dòng)通信技術(shù)的現(xiàn)狀與發(fā)展[A];四川省通信學(xué)會(huì)一九九五年學(xué)術(shù)年會(huì)論文集[C];1995年

7 廖明;張志華;余平;;多載波頻率分集CDMA在瑞利衰落信道下的性能[A];現(xiàn)代通信理論與信號(hào)處理進(jìn)展——2003年通信理論與信號(hào)處理年會(huì)論文集[C];2003年

8 黃允祺;;移動(dòng)通信CDMA(碼分多址)技術(shù)的新發(fā)展—SCDMA(時(shí)分雙工—碼分多址)技術(shù)介紹[A];四川省通信學(xué)會(huì)1997年學(xué)術(shù)年會(huì)論文集[C];1997年

9 杜曉實(shí);聶在平;楊峰;;CDMA中的一種新型自適應(yīng)波束形成算法[A];2001年全國(guó)微波毫米波會(huì)議論文集[C];2001年

10 杜曉實(shí);聶在平;楊峰;;CDMA中的一種新型自適應(yīng)波束形成算法[A];開(kāi)創(chuàng)新世紀(jì)的通信技術(shù)——第七屆全國(guó)青年通信學(xué)術(shù)會(huì)議論文集[C];2001年

相關(guān)重要報(bào)紙文章 前3條

1 記者 張平力;大區(qū)域碼分多址連接樣機(jī)通過(guò)驗(yàn)證[N];人民日?qǐng)?bào)海外版;2000年

2 楊欣欣;GPRS：通向3G的里程碑[N];中國(guó)國(guó)門(mén)時(shí)報(bào)(中國(guó)出入境檢驗(yàn)疫報(bào));2001年

3 記者 蒲立業(yè);中興公司研制出國(guó)產(chǎn)CDMA系統(tǒng)產(chǎn)品[N];新華每日電訊;2000年

相關(guān)博士學(xué)位論文 前1條

1 李國(guó)棟;CC-CDMA的碼構(gòu)造及系統(tǒng)設(shè)計(jì)方法[D];哈爾濱工業(yè)大學(xué);2016年

相關(guān)碩士學(xué)位論文 前10條

1 程焱;碼分多址無(wú)中心無(wú)線數(shù)字收發(fā)機(jī)的研究與設(shè)計(jì)[D];太原理工大學(xué);2006年

2 楊華;混沌數(shù)字碼分多址通信系統(tǒng)的計(jì)算機(jī)仿真及性能分析[D];中國(guó)人民解放軍信息工程大學(xué);2003年

3 楊霖;對(duì)稱(chēng)超松弛預(yù)處理迭代方法在碼分多址通信系統(tǒng)中的應(yīng)用[D];南京理工大學(xué);2004年

4 張愛(ài)菊;混沌在異步碼分多址通信系統(tǒng)的應(yīng)用研究[D];北京郵電大學(xué);2007年

5 石軍;混沌理論在碼分多址通信系統(tǒng)中的應(yīng)用研究[D];西安科技大學(xué);2003年

6 馬凌;直擴(kuò)碼分多址系統(tǒng)相關(guān)技術(shù)的研究與實(shí)現(xiàn)[D];武漢理工大學(xué);2006年

7 王艷;空時(shí)編碼與空時(shí)頻擴(kuò)展碼分多址的技術(shù)的研究[D];西安電子科技大學(xué);2011年

8 門(mén)華江;基于System View的碼分多址研究與仿真[D];大連海事大學(xué);2002年

9 薛春美;重疊碼分多址（OVCDMA）組網(wǎng)技術(shù)研究[D];北京郵電大學(xué);2010年

10 巴金祥;碼分多址移動(dòng)通信系統(tǒng)中擴(kuò)頻序列的研究[D];大連海事大學(xué);2002年

本文編號(hào)：1366041