Efficient joint frequency synchronization and channel estimation in OFDM systems

Author

Jamalabdollahi, Mohsen ; Salari, Soheil ; Zahedi, Behnam

Author_Institution

Fac. of Electr. & Comput. Eng., K.N. Toosi Univ. of Technol., Tehran, Iran

fYear

2011

fDate

20-22 April 2011

Firstpage

206

Lastpage

209

Abstract

The problem of joint carrier frequency offset (CFO) and channel estimation in orthogonal frequency division multiplexing (OFDM) systems is investigated in this study. The exact solution to this problem turns out to be too complex for practical purposes. To overcome this difficulty, we resort to the recursive least square (RLS) algorithm and propose an iterative scheme which iterates between estimating the channel parameters and the frequency offset. This results in an estimation algorithm of a reasonable complexity which is suitable for practical applications.

Keywords

OFDM modulation; channel estimation; computational complexity; frequency estimation; iterative methods; least squares approximations; recursive estimation; synchronisation; CFO; OFDM systems; RLS algorithm; channel estimation; channel parameters; efficient joint frequency synchronization; estimation algorithm; exact solution; iterative scheme; joint carrier frequency offset; orthogonal frequency division multiplexing systems; reasonable complexity; recursive least square algorithm; Channel estimation; Estimation; Frequency estimation; Joints; OFDM; Signal processing algorithms; Time domain analysis; Orthogonal frequency-division multiplexing (OFDM); carrier frequency offset (CFO); channel impulse response (CIR); recursive least square (RLS) algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing and Communications Applications (SIU), 2011 IEEE 19th Conference on

Conference_Location

Antalya

Print_ISBN

978-1-4577-0462-8

Electronic_ISBN

978-1-4577-0461-1

Type

conf

DOI

10.1109/SIU.2011.5929623

Filename

5929623