基于GPP平臺的TD-SCDMA系統(tǒng)物理層關(guān)鍵技術(shù)實現(xiàn)與優(yōu)化
發(fā)布時間：2018-10-25 10:26
【摘要】：隨著通信技術(shù)的快速發(fā)展,軟件無線電技術(shù)在移動通信系統(tǒng)的運用將是未來實現(xiàn)通信系統(tǒng)的一個重要研究方向。TD-SCDMA作為我國擁有自主知識產(chǎn)權(quán)的制式,是國內(nèi)通信領(lǐng)域開發(fā)者的研究熱點。同時,隨著微軟亞洲研究院SORA平臺的成功開發(fā),以通用處理器作為信號處理平臺,配合軟件無線電技術(shù)實現(xiàn)通信系統(tǒng)的開發(fā)模式越來越受到業(yè)內(nèi)研究者的關(guān)注,如何在通用處理器上開發(fā)出滿足實時性要求的移動通信系統(tǒng)將成為研究熱點。 基于這樣的背景,本文以通用處理器為信號處理平臺,應用軟件無線電的開發(fā)方式搭建TD-SCDMA系統(tǒng)物理層仿真平臺,并對鏈路進行誤碼率性能測試和時延測試。論文的研究重點是TD-SCDMA系統(tǒng)物理層主要信號處理模塊、以及聯(lián)合檢測和波束賦形兩個關(guān)鍵模塊在通用處理器平臺上的設(shè)計、實現(xiàn)與優(yōu)化。在闡述了TD-SCDMA系統(tǒng)物理層基本概念和具體的信號處理流程之后,本文給出了主要模塊的實現(xiàn)方法,對于關(guān)鍵模塊中聯(lián)合檢測和波束賦形分別采用ZF-BLE和最大接收功率特征分解算法作為實現(xiàn)方法。在此基礎(chǔ)上,以查找表、IPP庫和SIMD指令三種優(yōu)化方式來對以上各個模塊進行優(yōu)化,降低信號處理時延。 本文的創(chuàng)新點分主要是在對波束賦形模塊的優(yōu)化時,根據(jù)信號處理中涉及到大量的復數(shù)矩陣間的乘法,提出了一種由多種SIMD指令組合的波束賦形優(yōu)化方法,該方法將復數(shù)向量和矩陣乘法以及復數(shù)矩陣間乘法的多種SIMD指令組合,使復雜的復數(shù)運算轉(zhuǎn)化成簡單的四則SIMD運算指令,大大降低了信號處理時延,增大數(shù)據(jù)吞吐率。 本文給出了上行鏈路、具有波束賦形的下行鏈路誤碼率性能仿真以及各個模塊時延統(tǒng)計結(jié)果,分析并驗證了優(yōu)化效果。由仿真結(jié)果可知,基于通用處理器的TD-SCDMA系統(tǒng)物理層信號處理能滿足協(xié)議誤碼率和實時性要求,驗證了GPP平臺在通信系統(tǒng)中應用的可行性。隨著通用處理器技術(shù)的進一步發(fā)展,基于通用處理器平臺的通信系統(tǒng)軟件無線電開發(fā)將成為研究熱點。
[Abstract]:With the rapid development of communication technology, the application of software radio technology in mobile communication system will be an important research direction in the future. TD-SCDMA is the standard with independent intellectual property rights in China. Is the domestic communication domain developer's research hot spot. At the same time, with the successful development of the SORA platform of Microsoft Research Institute in Asia, the development model of communication system based on universal processor and software radio technology has attracted more and more attention from researchers in the industry. How to develop a real-time mobile communication system on a general purpose processor will become a research hotspot. Based on this background, this paper uses the universal processor as the signal processing platform to build the physical layer simulation platform of TD-SCDMA system with the development of software radio, and carries on the BER performance test and the delay test to the link. This paper focuses on the design, implementation and optimization of the main signal processing modules in the physical layer of TD-SCDMA system and the two key modules of joint detection and beamforming on the general processor platform. After explaining the basic concept of physical layer and the specific signal processing flow of TD-SCDMA system, this paper gives the implementation method of the main modules. For the key modules, the joint detection and beamforming are implemented by ZF-BLE and the maximum received power characteristic decomposition algorithm, respectively. On this basis, the above modules are optimized by three optimization methods: lookup table, IPP library and SIMD instruction to reduce the delay of signal processing. The innovation of this paper is mainly to optimize the beamforming module. According to the multiplications between complex matrices involved in signal processing, a beamforming optimization method is proposed, which is composed of multiple SIMD instructions. This method combines multiple SIMD instructions of complex vector and matrix multiplication as well as multiplication between complex matrices. The complex operation is transformed into four simple SIMD operation instructions, which greatly reduces the signal processing delay and increases the data throughput. In this paper, the error rate performance simulation of uplink, downlink with beamforming and the statistical results of delay of each module are given, and the optimized results are analyzed and verified. The simulation results show that the physical layer signal processing of TD-SCDMA system based on universal processor can meet the requirements of protocol bit error rate and real-time performance. The feasibility of the application of GPP platform in communication system is verified. With the further development of general processor technology, the development of communication system software radio based on universal processor platform will become a research hotspot.
【學位授予單位】：北京郵電大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN929.53
本文編號：2293437
[Abstract]:With the rapid development of communication technology, the application of software radio technology in mobile communication system will be an important research direction in the future. TD-SCDMA is the standard with independent intellectual property rights in China. Is the domestic communication domain developer's research hot spot. At the same time, with the successful development of the SORA platform of Microsoft Research Institute in Asia, the development model of communication system based on universal processor and software radio technology has attracted more and more attention from researchers in the industry. How to develop a real-time mobile communication system on a general purpose processor will become a research hotspot. Based on this background, this paper uses the universal processor as the signal processing platform to build the physical layer simulation platform of TD-SCDMA system with the development of software radio, and carries on the BER performance test and the delay test to the link. This paper focuses on the design, implementation and optimization of the main signal processing modules in the physical layer of TD-SCDMA system and the two key modules of joint detection and beamforming on the general processor platform. After explaining the basic concept of physical layer and the specific signal processing flow of TD-SCDMA system, this paper gives the implementation method of the main modules. For the key modules, the joint detection and beamforming are implemented by ZF-BLE and the maximum received power characteristic decomposition algorithm, respectively. On this basis, the above modules are optimized by three optimization methods: lookup table, IPP library and SIMD instruction to reduce the delay of signal processing. The innovation of this paper is mainly to optimize the beamforming module. According to the multiplications between complex matrices involved in signal processing, a beamforming optimization method is proposed, which is composed of multiple SIMD instructions. This method combines multiple SIMD instructions of complex vector and matrix multiplication as well as multiplication between complex matrices. The complex operation is transformed into four simple SIMD operation instructions, which greatly reduces the signal processing delay and increases the data throughput. In this paper, the error rate performance simulation of uplink, downlink with beamforming and the statistical results of delay of each module are given, and the optimized results are analyzed and verified. The simulation results show that the physical layer signal processing of TD-SCDMA system based on universal processor can meet the requirements of protocol bit error rate and real-time performance. The feasibility of the application of GPP platform in communication system is verified. With the further development of general processor technology, the development of communication system software radio based on universal processor platform will become a research hotspot.
【學位授予單位】：北京郵電大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN929.53
【參考文獻】
相關(guān)期刊論文 前4條
1 康紹莉,裘正定,李世鶴;線性聯(lián)合檢測算法在TD-SCDMA系統(tǒng)中的性能分析與比較[J];通信學報;2002年06期
2 康紹莉,裘正定,李世鶴;TD-SCDMA系統(tǒng)中低代價信道估計方法的改進[J];通信學報;2002年10期
3 吳群英,肖先賜,李世鶴;時延角度擴散信道中TD-SCDMA系統(tǒng)下行波束技術(shù)[J];信號處理;2002年05期
4 秦洪峰,曾召華;TD-SCDMA系統(tǒng)下行波束賦形技術(shù)研究[J];郵電設(shè)計技術(shù);2004年07期
，本文編號：2293437
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