Meet Inspiring Speakers and Experts at our 3000+ Global Conference Series LLC LTD Events with over 1000+ Conferences, 1000+ Symposiums and 1000+ Workshops on Medical, Pharma, Engineering, Science, Technology and Business.

Explore and learn more about Conference Series LLC LTD : World’s leading Event Organizer

Back

Tetsuya Shimamura

Tetsuya Shimamura

Saitama University, Japan

Title: Spectrum efficient PAPR reduction techniques for OFDM systems

Biography

Biography: Tetsuya Shimamura

Abstract

Orthogonal frequency division multiplexing (OFDM) is a promising multi-carrier modulation technique and has been widely used for wireless communications systems. OFDM is inherently high-bandwidth efficient, but we cannot avoid bandwidth inefficiency to remedy the increased peak-to-average power (PAPR) issue in OFDM systems. In this talk, we consider the bandwidth inefficiency issue of some PAPR reduction techniques for OFDM systems. These techniques are effectively combined with a concept of subcarrier group modulation (SGM) to be proposed, resulting in schemes which accomplish bandwidth efficient communications. The available subcarriers are divided into a number of groups and each group is modulated. Then at the receiver side, a maximum likelihood detector is used to catch up the modulation information. The resulting schemes attain low PAPR without compromising their throughput. Some simulations results are shown and it is unveiled that SGM is an interesting idea and plays an important role for OFDM systems.