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Estimation of Frequency Offset in Wireless Transceivers using Subspace Fitting

Author(s):

S Ravikanth , CVR College of Engineering; B Shankar, CVR College of Engineering

Keywords:

TDM, Carrier Frequency Offset, Hankel Matrix

Abstract

Wireless devices in future have to support many applications with low latency and more reliability. Optimizing wireless communication transmitters and receivers with different characteristics of circuit has more hardware limitations. Exchanging between transmitter and receiver wireless operations time division multiplexing (TDM) for a given source voltage load can change. The quick change in load results in a change in source voltage which effects carrier frequency offset. This offset could not be calculated using conventional methods. This paper presents calculation of transient offset frequency by considering second order control system (Under damped). The transient carrier frequency offset is compensated by parametric estimation algorithm having low complexity. This utilizes the null space of the HANKEL-like matrix obtained from angle difference of the 2 halves of the training sequence. Weighted subspace fitting algorithm is used to calculate mean square error of the estimated parameters in the presence of noise.

Other Details

Paper ID: IJSRDV5I100058
Published in: Volume : 5, Issue : 10
Publication Date: 01/01/2018
Page(s): 23-26

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