Title: LTE HANDSET RF POWER CONSUMPTION EMULATION

Year of Publication: 2013
Page Numbers: 371-378
Authors: Deogratius Musiige, Laulagnet Vincent, Francois Anton, Darka Mioc
Conference Name: The Third International Conference on Digital Information Processing and Communications (ICDIPC2013)
- United Arab Emirates

Abstract:


This paper presents a new methodology for the emulation of power consumption of the RF portion of a cell phone/ handset when transmitting a LTE signal. The inputs to the emulation are baseband-RF subsystem logical interface parameters such as bandwidth, carrier frequency, TX power. The dissipated power is measured at discrete values of the variables, and the emulated power is obtained by a 4  5  1 neural network applying Pseudo-Gauss-Newton optimization algorithm. The methodology has been validated to have an accuracy of 94.3% though this is constrained by the measurement uncertainty of 11%. A FTP upload scenario in motion is used to illustrate the emulation methodology. A homotopy mapping method described in this paper is able to model the power consumption of the RF subsystem of a handset operating at a carrier frequency of 1.95 GHz with a 10 MHz signal bandwidth, from measured data at 1.4 and 20 MHz signal bandwidths with an error of only 1%.