I have to persist to go on with the preparation for applying abroad. Although I have confronted some problem with my research progress, I have done a well job at English tests GRE (V590+Q800+AW4.0) and TOEFL (R30 + L27 + S23 + W27).  I have the faith that everything will go on as it achieves! 

Recently, I am composing my research paper on DOA estimation. This time I will try to submit it to IEEE Signal Processing Letters. This will be a hard experience. I have lots of work to do, writing manuscript, simulating and asking for help, et al. However, I'll definitely try my best to accomplish this aim. Because it's vital for my application late this year. Ooops, that's a bigger challenge  for me!
Good news, My paper titled "Direction estimation under compressive sensing framework: A review and experimental results" is included in the IEEE xplore now.