Turbo Joint Decoding, Synchronization and Channel Estimation for Coded MIMO-OFDM Systems

Author

Nguyen-Le, Hung ; Le-Ngoc, Tho ; Ko, Chi Chung

Author_Institution

Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore

fYear

2008

Firstpage

4366

Lastpage

4370

Abstract

The effects of carrier frequency offset (CFO), sampling frequency offset (SFO), and channel responses on the received samples are analyzed and explored to develop the turbo joint channel estimation, synchronization and decoding scheme for coded MIMO-OFDM systems. For burst transmission, with initial estimates derived from the pre-amble, the proposed scheme can operate without the need of pilot tones during the data segment. Simulation results also show that the proposed scheme offers fast convergence and low mean-squared-error (MSE) over quasi-static Rayleigh multi-path fading channels, and can be used in a coded MIMO-OFDM transceiver in presence of multipath fading, CFO, and SFO to achieve a bit-error-rate (BER) performance comparable to that in an ideal case of perfect synchronization and channel estimation after three iterations.

Keywords

MIMO communication; OFDM modulation; channel estimation; error statistics; synchronisation; turbo codes; BER; CFO; MSE; SFO; bit-error-rate; carrier frequency offset; channel estimation; channel responses; coded MIMO-OFDM systems; mean-squared-error; multiple-input multiple-output-orthogonal frequency division multiplexing; sampling frequency offset; synchronization; turbo joint decoding; Bit error rate; Channel estimation; Convergence; Decoding; Fading; Frequency estimation; Frequency synchronization; Rayleigh channels; Sampling methods; Transceivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2008. ICC '08. IEEE International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-2075-9

Electronic_ISBN

978-1-4244-2075-9

Type

conf

DOI

10.1109/ICC.2008.819

Filename

4533855