An efficient design of LTE reference signal and performance analysis
Ning Jin · 2011
A system presented that replace most of the reference signal using the encoded system symbols to reduce the meaningless reference signal,which maked the overall system transmission efficiency was improved.In the condition of two transmit antennas,the number of meaningless reference signal inserted in a single frame of the proposed structure has reduced 97.5% than the LTE structure,0.238% of the usable time-frequency resource only.Moreover,through the iterative channel estimation and re-decoding,the bit error rate performance of the proposed structure was slightly better than the original program.Four antennas,the proposed structure saved 96.7% of the meaningless reference signal,and the performance was also slightly increased compared with the original structure.In addition,the compares of the performance between the proposed structure and the original program in different kinds of multipath fading,different code rates and different Doppler shifts are shown.