Carrier Frequency Offset and I/Q imbalance estimation circuit RTL design for OFDM direct conversion receivers

Author

De Leon, Franz A. ; Lanante, Leonardo A., Jr. ; Kurosaki, Masayuki ; Ochi, Hiroshi

Author_Institution

Univ. of the Philippines, Philippines

fYear

2009

fDate

7-9 Jan. 2009

Firstpage

187

Lastpage

191

Abstract

In this paper, we present a model-based register transfer level (RTL) design of a simple joint parameter method for carrier frequency offset and I/Q imbalance estimation. The estimation scheme is based on a proposed algorithm that uses only two short training symbols for faster estimation. The simple yet robust algorithm is then optimized for field programmable gate array (FPGA) implementation. Simulation results show that the performance of the 16-bit fixed-point system approximates that of the ideal performance of the estimation algorithm.

Keywords

OFDM modulation; field programmable gate arrays; receivers; I/Q imbalance estimation; OFDM direct conversion receivers; carrier frequency offset; field programmable gate array; model-based register transfer level design; Circuits; Field programmable gate arrays; Frequency conversion; Frequency estimation; Least squares approximation; Low pass filters; OFDM; Signal design; Signal processing algorithms; Wireless communication; Carrier Frequency Offset; FPGA; I/Q Imbalance; Least Squares Estimate; RTL;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communication Systems, 2009. ISPACS 2009. International Symposium on

Conference_Location

Kanazawa

Print_ISBN

978-1-4244-5015-2

Electronic_ISBN

978-1-4244-5016-9

Type

conf

DOI

10.1109/ISPACS.2009.5383869

Filename

5383869