A CDMA system wideband feedforward linearizer design based on an analytical model

Coskun A., DEMİR Ş.

IEEE Radio and Wireless Conference (RAWCON 2003), Massachusetts, Amerika Birleşik Devletleri, 10 - 13 Ağustos 2003, ss.191-194 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/rawcon.2003.1227925
  • Basıldığı Şehir: Massachusetts
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Sayfa Sayıları: ss.191-194
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Feedforward systems are complicated due to the presence of two nonlinear amplifiers and the requirement of amplitude, delay and phase match in two different loops. Analytical tools that characterize this complexity help the designer a lot in rapid and accurate initial optimizations, particularly for wideband applications. In this work we present a wideband feedforward linearizer design for CDMA applications, based on an analytical model and speed and accuracy aspects of the results are compared with RF simulations performed by real power amplifiers and components.