2017/3/10(五) 14:20 -Borching Su, National Taiwan University, Taipei, Taiwan- Matrix Characterization for Generalized Frequency Division Multiplexing and Optimal Prototype Filters
Title: Matrix Characterization for Generalized Frequency Division Multiplexing and Optimal Prototype Filters
Speaker: Borching Su, National Taiwan University, Taipei, Taiwan
Abstract:
Generalized frequency division multiplexing (GFDM) has been studied as a new transmission waveform in multi carrier communication systems. It is a generalization of the popular OFDM and features good properties such as low out-of-band (OOB) radiation and relaxed requirements of time and frequency synchronization. However, GFDM is known to have a number of disadvantages, including noise amplification, high complexity, non-orthogonal subcarriers, etc., and, as a result, has not been widely adopted in modern communication systems. In this talk, some recent results will be presented which enable us to overcome many of the above disadvantages and make GFDM modulation a promising technique in future communication system. In particular, a new, matrix-based characterization for GFDM is presented which reveals the conditions on prototype filters that lead to optimal performance. Based on the matrix characterization, low-complexity implementation of GFDM transceivers at the order of O(N log N), where N is the block length, will be presented. We will also show how GFDM can be applied in a multi-user system with our recent contributions in 3GPP standardization meetings.
Bio:
Borching Su received the B.S. and M.S. degrees in electrical engineering and communication engineering, both from National Taiwan University (NTU), Taipei, Taiwan, in 1999 and 2001, respectively, and the Ph.D. degree in Electrical Engineering from the California Institute of Technology (Caltech), Pasadena, CA, USA, in 2008. Dr. Su received Charles H. Wilts prize from Caltech for his Ph.D. thesis on blind channel estimation. He joined NextWave Broadband, Inc., San Diego, CA, USA in 2008 where he participated in physical-layer system design of the company's WiMax mobile chipset products. In August 2009, Dr. Su joined National Taiwan University and is currently an assistant professor. His current research interests include signal processing for communication systems, particularly waveform and beamforming designs for next-generation communication systems.
Speaker: Borching Su, National Taiwan University, Taipei, Taiwan
Abstract:
Generalized frequency division multiplexing (GFDM) has been studied as a new transmission waveform in multi carrier communication systems. It is a generalization of the popular OFDM and features good properties such as low out-of-band (OOB) radiation and relaxed requirements of time and frequency synchronization. However, GFDM is known to have a number of disadvantages, including noise amplification, high complexity, non-orthogonal subcarriers, etc., and, as a result, has not been widely adopted in modern communication systems. In this talk, some recent results will be presented which enable us to overcome many of the above disadvantages and make GFDM modulation a promising technique in future communication system. In particular, a new, matrix-based characterization for GFDM is presented which reveals the conditions on prototype filters that lead to optimal performance. Based on the matrix characterization, low-complexity implementation of GFDM transceivers at the order of O(N log N), where N is the block length, will be presented. We will also show how GFDM can be applied in a multi-user system with our recent contributions in 3GPP standardization meetings.
Bio:
Borching Su received the B.S. and M.S. degrees in electrical engineering and communication engineering, both from National Taiwan University (NTU), Taipei, Taiwan, in 1999 and 2001, respectively, and the Ph.D. degree in Electrical Engineering from the California Institute of Technology (Caltech), Pasadena, CA, USA, in 2008. Dr. Su received Charles H. Wilts prize from Caltech for his Ph.D. thesis on blind channel estimation. He joined NextWave Broadband, Inc., San Diego, CA, USA in 2008 where he participated in physical-layer system design of the company's WiMax mobile chipset products. In August 2009, Dr. Su joined National Taiwan University and is currently an assistant professor. His current research interests include signal processing for communication systems, particularly waveform and beamforming designs for next-generation communication systems.