Pengfei Xia

Title: Innovations by Pengfei Xia in Wireless Transmission Technologies

Introduction

Pengfei Xia is an accomplished inventor based in Saint Paul, MN (US). He has made significant contributions to the field of wireless transmission technologies, particularly in multicarrier multiple access systems. His innovative approaches have the potential to enhance communication efficiency and performance.

Latest Patents

Pengfei Xia holds a patent for a technology titled "Bandwidth and power efficient multicarrier multiple access." This patent describes techniques for multicarrier multiple access wireless transmission, such as orthogonal frequency-division multiple access (OFDMA) transmissions, over frequency selective fading channels. The techniques are designed to maintain constant modulus transmissions for uplink while effectively mitigating intersymbol interference. Specifically, the methods utilize non-redundant unitary precoding across OFDMA subcarriers to ensure constant modulus transmissions for uplink communications. The techniques involve precoding a block of information symbols and assigning a different subcarrier for each symbol of the block. The subcarriers are selected to be equi-spaced and may be chosen from a phase-shift keying constellation. The number of symbols per block is equal to the number of subcarriers assigned per user. Importantly, even with multiple subcarriers per user, the techniques enable constant modulus transmissions for uplink. Consequently, these methods may achieve high power and bandwidth efficiency as well as improved performance over conventional OFDMA and GMC-CDMA transmissions.

Career Highlights

Pengfei Xia is affiliated with the Regents of the University of Minnesota, where he continues to advance research in wireless communication technologies. His work has garnered attention for its innovative approach to solving complex problems in the field.

Collaborations

Some of his notable coworkers include Shengli Zhou and Georgios B Giannakis, who have collaborated with him on various research projects and innovations.

Conclusion

Pengfei Xia's contributions to wireless transmission technologies exemplify the impact of innovative thinking in enhancing communication systems. His patent on multicarrier multiple access techniques showcases his commitment to improving efficiency and performance in wireless communications.