1. Department of Electrical Engineering and Computer Science, Nanoscale Communication Integrated Circuits (NCIC) Labs, University of California at Irvine, Irvine, CA, USA
2. Qualcomm Corporation, San Diego, CA, USA
3. Department of Electrical Engineering and Computer Science and Department of Biomedical Engineering, Nanoscale Communication Integrated Circuits (NCIC) Labs, Center for Pervasive Communication and Computing, University of California at Irvine, Irvine, CA, USA