Combined iterative demapping and decoding for coded M-ary BOK DS-UWB systems

Author

Takizawa, Kenichi ; Kohno, Ryuji

Author_Institution

Nat. Inst. of Inf. & Commun. Technol., Japan

fYear

2004

fDate

18-21 May 2004

Firstpage

207

Lastpage

211

Abstract

The use of combined iterative demapping/decoding (CIDD) is investigated in coded M-ary biorthogonal keying based direct sequence ultra wideband (MBOK DS-UWB) systems. The MBOK DS-UWB systems are composed of a convolutional encoder, an interleaver and an MBOK pulse demapper. This CIDD can improve the error rate performances by applying the concept of the turbo principle into the demapping and decoding process. Simulation results show that the CIDD improves the bit error rate performances in both static and multipath fading channels in low complexity.

Keywords

computational complexity; convolutional codes; error statistics; fading channels; interleaved codes; iterative decoding; modulation coding; multipath channels; bit error rate performance; coded M-ary biorthogonal keying DS-UWB systems; coded M-ary biorthogonal keying based direct sequence ultra wideband systems; combined iterative demapping/decoding; convolutional encoder; interleaver; iterative decoding; multipath channels; multipath fading channels; pulse demapper; turbo principle; Communications technology; Convolution; Convolutional codes; Delay effects; Energy consumption; Error analysis; Forward error correction; Iterative decoding; Reed-Solomon codes; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultra Wideband Systems, 2004. Joint with Conference on Ultrawideband Systems and Technologies. Joint UWBST & IWUWBS. 2004 International Workshop on

Print_ISBN

0-7803-8373-7

Type

conf

DOI

10.1109/UWBST.2004.1320965

Filename

1320965