A soft information calculating method for SC-FDE output symbol

Author

Xu Dinggen ; Cheng Naiping ; Zhou Hui

Author_Institution

Co. of Postgrad. Manage., Acad. of Equip. Command & Technol., Beijing, China

Volume

3

fYear

2010

fDate

26-28 Feb. 2010

Firstpage

590

Lastpage

593

Abstract

The hard decision symbol of conventional SC-FDE output is not perfect to the posterior SISO decoder of Shannon limit codes such as Turbo code and LDPC codes, which can achieve the Shannon limit performance on condition that the in-out information is soft. In this paper, a soft information calculation method for SC-FDE output symbol is proposed which increases the accuracy of information into the SISO decoder of Shannon limit codes and improves the transmission system. The numerical simulation results also show that the soft output SC-FDE gains an advantage over the hard one and the additional SNR gain can be obtained in frequency selective channel.

Keywords

decoding; equalisers; parity check codes; turbo codes; LDPC codes; SC-FDE output symbol; SISO decoder; Shannon limit codes; frequency selective channel; single carrier with frequency domain equalization; soft information calculating method; transmission system; turbo code; Additive white noise; Bit rate; Decoding; Frequency domain analysis; Intersymbol interference; Numerical simulation; OFDM; Parity check codes; Quadrature amplitude modulation; Turbo codes; SC-FDE; SISO decoding; Shannon limit codes; soft information;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer and Automation Engineering (ICCAE), 2010 The 2nd International Conference on

Conference_Location

Singapore

Print_ISBN

978-1-4244-5585-0

Electronic_ISBN

978-1-4244-5586-7

Type

conf

DOI

10.1109/ICCAE.2010.5451815

Filename

5451815