Scheduled System Maintenance:
Some services will be unavailable Sunday, March 29th through Monday, March 30th. We apologize for the inconvenience.
By Topic

Compensation for Power Amplifier Nonlinearity in the Presence of Local Oscillator Coupling Effects

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

The purchase and pricing options are temporarily unavailable. Please try again later.
4 Author(s)
Seung Hyeok Ahn ; Dept. of Electr. Eng., KAIST (Korea Adv. Inst. of Sci. & Technol.), Daejeon, South Korea ; Sungho Choi ; Eui-Rim Jeong ; Lee, Y.H.

We consider the design of a digital predistortion (DPD) scheme when there is a crosstalk between a local oscillator (LO) and a power amplifier (PA) called LO self-coupling. We first develop a baseband equivalent model for a direct conversion transmitter afflicted by LO self-coupling. Based on this model, a two-stage process, consisting of a feedback equalizer (FBEQ) and DPD, is proposed for the joint compensation of PA nonlinearity and LO self-coupling. The advantage of the proposed DPD over conventional DPD is demonstrated through computer simulation.

Published in:

Communications Letters, IEEE  (Volume:16 ,  Issue: 5 )