Research Of Design Verification Test In LTE System

The LTE (Long Term Evolution) scheme was proposed by3GPP, which is compatible with current3G telecommunications system. In order to achieve the performance of high data rate, high quality and high mobility, LTE uses the Orthogonal Frequency Division Multiplexing (OFDM) and Multiple-input multiple-output (MIMO) technologies etc. This thesis is focus on Design Verification Test in TDD LTE system, and the main contribution of this thesis is as follows:1. We did research on the simulation of the transmission of LTE, such as EVM, flatness, SEM, ACLR.2. On the basis of the3GPP, the practical meaning of some important parameters in the testing is investigated. In order to meet the requirements of the testing, we study on the principle and key technology of LTE and solve the possible problems of EVM、 SEM, ACLR etc.3. A new method is proposed in use for the LTE Sensitivity Testing.4. Considering the testing results of both Agilent and R&S, and the complexity of hardware implementation, a scheme for the LTE design verification testing is presented and implemented.The results demonstrate that the better performance can be achieved using the improved method, which is desirable to be adopted in the practical verification testing.