TD-LTE系统中探测参考信号的DSP实现

摘要

Sounding reference signal is used for the uplink channel quality measurements in TD-LTE system. At beginning, this paper provides the various formulas that generating the SRS, and then gives the design flow chart for programming realization. After that, use TI TMS320C6455 DSP to generate SRS by software programming, definitely speaking, by using C and Assembly ian-guage. Finally, this paper specifically describe the realization of division and exponentiation because it's the hardest and most time-consuming operations in the DSP implementation. The method written in this paper has been applied to LTE-TDD wireless integrated test instrument development.%探测参考信号在TD-LTE系统中用于上行信道质量的测量.介绍了探测参考信号SRS生成涉及的各个公式,给出了程序实现的设计流程.并采用TI公司TMS320C64系列的DSP、使用C和汇编语言进行软件编程生成SRS信号.最后对最难运算且最耗时的除法和指数运算的实现进行了巧妙的设计.该实现方法已应用于LTE-TDD无线综合测试仪表的开发中.