基于FPGA的STA-CORDIC算法在SCME中的应用

鉴于SCME（演进型空间信道建模）过程中,基于CORDIC算法定点嵌套正余弦函数处理的重要性及其结果精度、资源消耗和延时时间之间的博弈性,提出了STA-CORDIC算法,即在传统CORDIC算法结构之外增加算法精度与迭代次数、定点比特数之间多参量误差统计分析模块,之后基于Xilinx公司Virtex-6芯片做算法FPGA实现.通过TD-LTE射频一致性测试仪表SCME模块的应用,验证了算法结果能够较好地解决上述计算精度和处理速度的最优化折中问题....

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Bibliographic Details
Published in电子技术应用 Vol. 40; no. 8; pp. 109 - 111
Main Author 王华华 陈雷成 陈发堂 李明 汪朋锐
Format Journal Article
LanguageChinese
Published 重庆邮电大学重庆市移动通信技术重点实验室,重庆,400065 2014
Subjects
SCME
STA—CORDIC
三角函数
定点仿真
三角函数
simulation
fixed-point
STA-CORDIC
定点仿真
SCME
trigonometric
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ISSN0258-7998

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Summary:鉴于SCME（演进型空间信道建模）过程中,基于CORDIC算法定点嵌套正余弦函数处理的重要性及其结果精度、资源消耗和延时时间之间的博弈性,提出了STA-CORDIC算法,即在传统CORDIC算法结构之外增加算法精度与迭代次数、定点比特数之间多参量误差统计分析模块,之后基于Xilinx公司Virtex-6芯片做算法FPGA实现.通过TD-LTE射频一致性测试仪表SCME模块的应用,验证了算法结果能够较好地解决上述计算精度和处理速度的最优化折中问题.
Bibliography:STA-CORDIC ; trigonometric ; SCME ; fixed-point simulation
In view of the importance of fixed-point Sine and Cosine functions based on CORDIC and the game problem a- mong the algorithm accuracy, resource consumption and delay time in SCME （Spatial Channel Modeling Extended）, this article pre- sents the STA-CORDIC which adding a error statistical analysis module of algorithm accuracy, the number of iterations and the fixed-point number of bits after the traditional CORDIC algorithm, and then conducting the FPGA implement based on the Virtex- 6 chip of Xilinx company. Through the application in the SCME module in LTE RF conformance testing instrument verified that this algorithm could solve the optimization tradeoff between the accuracy and processing speed.
11-2305/TN
Wang Huahua, Chen Leicheng, Chen Fatang, Li Ming, Wang Pengrui （Key Laboratory of Mobile Communication Technology of Chongqing, Chongqing University of Posts and Telecommunications, Chongqing 400065, China）
ISSN:0258-7998