Turbo trellis-coded modulation with time varying mixed mapping

Author

Onggosanusi, Eko N. ; Gatherer, Alan ; Dabak, Anand G.

Author_Institution

Wireless Commun. Branch, Texas Instrum. Inc., Dallas, TX, USA

Volume

4

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

2409

Abstract

We describe a technique to control the trade-off between the error floor and the waterfall performance of parallel concatenated trellis-coded. modulation (PCTCM), which is also known as turbo TCM, via the choice of coded-bits-to-signal mapping for a fixed component code. We demonstrate that different choice of mapping leads to different error floor and waterfall performance. One mapping may have the lowest error floor but result in poor waterfall performance, while another mapping may achieve the opposite. We then present the time-varying mixed mapping scheme for PCTCM systems. The proposed mixed mapping scheme enables us to generate a set of turbo trellis codes from two choices of coded-bits-to-signal mapping with various waterfall performance and error floor

Keywords

concatenated codes; convolutional codes; trellis coded modulation; turbo codes; PCTCM; coded-bits-to-signal mapping; error floor; fixed component code; parallel concatenated convolutional code; parallel concatenated trellis-coded. modulation; time varying mixed mapping; time-varying mixed mapping; turbo TCM; turbo trellis codes; turbo trellis-coded modulation; waterfall performance; Bandwidth; Bit error rate; Concatenated codes; Convolutional codes; Digital signal processing; Feedback; Modulation coding; Signal to noise ratio; Turbo codes; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th

Conference_Location

Atlantic City, NJ

ISSN

1090-3038

Print_ISBN

0-7803-7005-8

Type

conf

DOI

10.1109/VTC.2001.957181

Filename

957181