PAPR Reduction Techniques in LTE-OFDM Networks

As a promising technique, OFDM has been widely used in many new and emerging broadband communication systems, such as digital audio broadcasting (DAB), high-definition television (HDTV), wireless local area network (IEEE 802.11a and HIPERLAN/2). However, as the OFDM signals are the sum of signals with random amplitude and phase, they are likely to have large PAPR that requires a linear high-power- amplifier (HPA) with an extremely high dynamic range, which is expensive and inefficient. Furthermore, any amplifier nonlinearity causes intermodulation products resulting in unwanted out-of-band power and also increases complexity of DAC-ADC convertors.This work describes some of the PAPR Reduction Techniques and comparison among them.

Autorentext

Assistant Professor,Department of Electronics and Communication Engineering, Chhatrapati Shivaji Institute of Technology, Durg, Chattisgarh, India.Presently pursuing M.Tech. under the guidance of Mr. Mangal Singh, Asso. Prof., CSIT.