Crest Factor And Its Influence...

Crest Factor And Its Influence On OFDM SystemGet To Know Crest Factor And Its Influence On The Design Of OFDM-Based Systems

This article is the third in a series of quarterly guest columns by Justin Panzer, manager of product marketing, Rohde & Schwarz. This installment is coauthored by Bernhard Kaehs, a senior development expert in the company’s broadcasting division.

The exceptional performance of wireless communications systems and most recently television broadcasting is delivered in large measure by digital transmission technology and more specifically by higher-order modulation schemes such as Orthogonal Frequency Division Multiplexing (OFDM). However, they present major design challenges, since OFDM systems can have peak-to-average power ratios as high as 20:1, making it essential to carefully specify RF power components in