Turbo Equalization of Coded OFDM Symbols in Poor HF Channels

Author

Ureten, Oktay ; Serinken, Nur

Author_Institution

Sch. of Inf. Technol. & Eng., Ottawa Univ., Ont.

fYear

2006

fDate

38838

Firstpage

1771

Lastpage

1774

Abstract

In this paper, an iterative receiver that utilizes soft outputs of a FEC decoder to improve channel estimates iteratively is proposed. At each iteration, reliable symbols are selected and included in the extended training set. The channel is re-estimated using the extended set at successive iterations. The performance of the proposed technique is tested in simulated poor HF channels and shown to improve the performance by about 2 dB at a BER of 10^-4 over the non-iterative case

Keywords

OFDM modulation; channel coding; channel estimation; equalisers; error statistics; iterative decoding; radio receivers; turbo codes; BER; FEC decoder; HF channel; bit error rate; channel estimation; coded OFDM symbol; iterative receiver; orthogonal frequency division multiplexing; turbo equalization; Bit error rate; Fading; Frequency estimation; Hafnium; Iterative decoding; OFDM; Parity check codes; Quadrature amplitude modulation; Radio broadcasting; Turbo codes; HF modem; LDPC codes; OFDM; turbo equalization;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 2006. CCECE '06. Canadian Conference on

Conference_Location

Ottawa, Ont.

Print_ISBN

1-4244-0038-4

Electronic_ISBN

1-4244-0038-4

Type

conf

DOI

10.1109/CCECE.2006.277672

Filename

4054673

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3136578