星載MIMO檢測算法的抗SEU技術研究
發(fā)布時間：2018-11-28 14:57
【摘要】：2011、2012年韓國和我國分別向ITU組織提交了基于LTE通信體制的衛(wèi)星移動通信系統(tǒng)標準化草案,標志著LTE通信體制將成為未來衛(wèi)星移動通信的主流通信體制。MIMO作為LTE通信體制的核心技術之一,能在不增加帶寬的情況下,增加系統(tǒng)容量、提高頻譜利用率。將MIMO技術運用于星載平臺是當前衛(wèi)星LTE移動通信系統(tǒng)中要研究的關鍵技術問題,其中資源受限和空間輻照是首先需要解決的兩個瓶頸問題,因此本文以星載MIMO檢測算法為切入點,研究了相應的低開銷的抗單粒子翻轉(zhuǎn)方法,給出了基于LCTMR和基于SEC-SED的MIMO檢測算法;同時在系統(tǒng)架構(gòu)設計方面,引入可重構(gòu)設計思想,研究了可重構(gòu)模塊顆粒度對星載MIMO檢測算法可靠性的影響,主要工作和創(chuàng)新點如下:1.針對現(xiàn)有基于三模冗余設計的MIMO檢測算法資源占用率高的問題,提出了一種基于LCTMR星載MIMO檢測算法的抗SEU方法。該方法采用動態(tài)定標和自適應有效位提取,以減少部分乘法器的數(shù)據(jù)位寬,并優(yōu)化三模比較器設計來對誤差進行補償和修正,有效降低了MIMO檢測算法資源占用率,進而降低了單粒子翻轉(zhuǎn)概率。仿真與測試結(jié)果表明,與TMR-MIMO檢測算法相比,以較小的誤比特性能損失,換取了抗SEU性能的顯著提升。2.借鑒基于SEC-DED的傳統(tǒng)抗SEU方法,提出一種基于SEC-SED星載MIMO檢測算法的抗SEU方法。通過構(gòu)造包含矩陣數(shù)據(jù)相關性信息的冗余數(shù)據(jù),并將其伴隨原矩陣數(shù)據(jù)進行統(tǒng)一的運算,利用冗余數(shù)據(jù)運算結(jié)果所蘊含的內(nèi)在規(guī)律,檢測和糾正矩陣乘積運算過程中因單粒子翻轉(zhuǎn)影響產(chǎn)生的錯誤。仿真與測試結(jié)果表明,與基于三模冗余的檢測算法相比,所提方法以較小的檢錯糾錯時延為代價,降低資源占用率約30%,軟錯誤概率減少約25%。3.引入可重構(gòu)設計思想,針對可重構(gòu)模塊顆粒度會對系統(tǒng)可靠性產(chǎn)生影響的問題,提出一種可重構(gòu)馬爾科夫模型,并對其可重構(gòu)模塊顆粒度與系統(tǒng)可靠性間的關系進行分析,在此基礎上,給出了基于SEC-SED的可重構(gòu)MIMO檢測算法設計。仿真結(jié)果表明,可重構(gòu)設計的可靠度優(yōu)于非可重構(gòu)設計,且重構(gòu)顆粒度越小可靠度越高。4.基于V6測試平臺實現(xiàn)了基于SEC-SED的動態(tài)重構(gòu)MIMO檢測算法,通過設計一種快速高效的等比降維故障注入法,對重構(gòu)設計進行故障注入測試,驗證了算法的抗SEU性能。
[Abstract]:In 2011, South Korea and China submitted the standard draft of satellite mobile communication system based on LTE communication system to ITU in 2012. As one of the core technologies of LTE communication system, MIMO can increase system capacity and spectrum efficiency without increasing bandwidth. The application of MIMO technology to spaceborne platform is the key technical problem to be studied in the current satellite LTE mobile communication system, in which resource limitation and space irradiation are the first two bottleneck problems to be solved. Therefore, in this paper, the space-borne MIMO detection algorithm is taken as the starting point, and the corresponding low-overhead anti-single-particle inversion method is studied, and the MIMO detection algorithm based on LCTMR and SEC-SED is presented. At the same time, in the aspect of system architecture design, the paper introduces the reconfigurable design idea, and studies the impact of reconfigurable module granularity on the reliability of spaceborne MIMO detection algorithm. The main work and innovation are as follows: 1. In order to solve the problem of high resource utilization of existing MIMO detection algorithms based on three-mode redundancy design, a novel anti-SEU method based on LCTMR spaceborne MIMO detection algorithm is proposed. In this method, dynamic calibration and adaptive effective bit extraction are used to reduce the bit width of the partial multiplier, and the design of the three-mode comparator is optimized to compensate and correct the error, which effectively reduces the resource occupancy rate of the MIMO detection algorithm. Furthermore, the probability of single particle inversion is reduced. The simulation and test results show that compared with the TMR-MIMO detection algorithm, the performance loss of bit error is smaller, and the anti-SEU performance is significantly improved. 2. 2. Based on the traditional anti-SEU method based on SEC-DED, an anti-SEU method based on SEC-SED spaceborne MIMO detection algorithm is proposed. By constructing the redundant data which contains the correlation information of matrix data, and carrying on the unified operation with the original matrix data, the inherent law of the result of the redundant data operation is used. Detect and correct errors caused by single-particle flip in matrix product operation. The simulation and test results show that compared with the detection algorithm based on three-mode redundancy, the proposed method reduces the resource occupancy by about 30 percent and the probability of soft error by about 25. 3 at the cost of less error correction delay. By introducing the idea of reconfigurable design, a reconfigurable Markov model is proposed to solve the problem that the particle size of reconfigurable modules will affect the reliability of the system, and the relationship between the granularity of reconfigurable modules and the reliability of the system is analyzed. On this basis, the design of reconfigurable MIMO detection algorithm based on SEC-SED is presented. The simulation results show that the reliability of the reconfigurable design is better than that of the non-reconfigurable design, and the smaller the reconfigurable particle is, the higher the reliability is. The dynamic reconfigurable MIMO detection algorithm based on SEC-SED is implemented based on V6 test platform. By designing a fast and efficient equal ratio reduced-dimension fault injection method, fault injection test of the reconfiguration design is carried out, and the anti-SEU performance of the algorithm is verified.
【學位授予單位】：解放軍信息工程大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN919.3
本文編號：2363202
[Abstract]:In 2011, South Korea and China submitted the standard draft of satellite mobile communication system based on LTE communication system to ITU in 2012. As one of the core technologies of LTE communication system, MIMO can increase system capacity and spectrum efficiency without increasing bandwidth. The application of MIMO technology to spaceborne platform is the key technical problem to be studied in the current satellite LTE mobile communication system, in which resource limitation and space irradiation are the first two bottleneck problems to be solved. Therefore, in this paper, the space-borne MIMO detection algorithm is taken as the starting point, and the corresponding low-overhead anti-single-particle inversion method is studied, and the MIMO detection algorithm based on LCTMR and SEC-SED is presented. At the same time, in the aspect of system architecture design, the paper introduces the reconfigurable design idea, and studies the impact of reconfigurable module granularity on the reliability of spaceborne MIMO detection algorithm. The main work and innovation are as follows: 1. In order to solve the problem of high resource utilization of existing MIMO detection algorithms based on three-mode redundancy design, a novel anti-SEU method based on LCTMR spaceborne MIMO detection algorithm is proposed. In this method, dynamic calibration and adaptive effective bit extraction are used to reduce the bit width of the partial multiplier, and the design of the three-mode comparator is optimized to compensate and correct the error, which effectively reduces the resource occupancy rate of the MIMO detection algorithm. Furthermore, the probability of single particle inversion is reduced. The simulation and test results show that compared with the TMR-MIMO detection algorithm, the performance loss of bit error is smaller, and the anti-SEU performance is significantly improved. 2. 2. Based on the traditional anti-SEU method based on SEC-DED, an anti-SEU method based on SEC-SED spaceborne MIMO detection algorithm is proposed. By constructing the redundant data which contains the correlation information of matrix data, and carrying on the unified operation with the original matrix data, the inherent law of the result of the redundant data operation is used. Detect and correct errors caused by single-particle flip in matrix product operation. The simulation and test results show that compared with the detection algorithm based on three-mode redundancy, the proposed method reduces the resource occupancy by about 30 percent and the probability of soft error by about 25. 3 at the cost of less error correction delay. By introducing the idea of reconfigurable design, a reconfigurable Markov model is proposed to solve the problem that the particle size of reconfigurable modules will affect the reliability of the system, and the relationship between the granularity of reconfigurable modules and the reliability of the system is analyzed. On this basis, the design of reconfigurable MIMO detection algorithm based on SEC-SED is presented. The simulation results show that the reliability of the reconfigurable design is better than that of the non-reconfigurable design, and the smaller the reconfigurable particle is, the higher the reliability is. The dynamic reconfigurable MIMO detection algorithm based on SEC-SED is implemented based on V6 test platform. By designing a fast and efficient equal ratio reduced-dimension fault injection method, fault injection test of the reconfiguration design is carried out, and the anti-SEU performance of the algorithm is verified.
【學位授予單位】：解放軍信息工程大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN919.3
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