Near-capacity turbo trellis coded modulation design based on EXIT charts and union bounds - [transactions papers]

Author

Soon Xin Ng ; Alamri, O.R. ; Li, Yonghui ; Kliewer, J?¶rg ; Hanzo, Lajos

Author_Institution

Sch. of Electron. & Comput. Sci., Univ. of Southampton, Southampton

Volume

56

Issue

12

fYear

2008

fDate

12/1/2008 12:00:00 AM

Firstpage

2030

Lastpage

2039

Abstract

Bandwidth efficient parallel-concatenated Turbo Trellis Coded Modulation (TTCM) schemes were designed for communicating over uncorrelated Rayleigh fading channels. A symbol-based union bound was derived for analysing the error floor of the proposed TTCM schemes. A pair of In-phase (I) and Quadrature-phase (Q) interleavers were employed for interleaving the I and Q components of the TTCM coded symbols, in order to attain an increased diversity gain. The decoding convergence of the IQ-TTCM schemes was analysed using symbol-based EXtrinsic Information Transfer (EXIT) charts. The best TTCM component codes were selected with the aid of both the symbolbased union bound and non-binary EXIT charts, for designing capacity-approaching IQ-TTCM schemes in the context of 8 PSK, 16 QAM, 32 QAM and 64 QAM modulation schemes.

Keywords

Rayleigh channels; trellis coded modulation; turbo codes; EXIT charts; diversity gain; near-capacity turbo trellis coded modulation design; symbol-based union bound; uncorrelated Rayleigh fading channels; union bounds; Bandwidth; Convergence; Decoding; Diversity methods; Error analysis; Fading; Information analysis; Interleaved codes; Modulation coding; Quadrature amplitude modulation; Decoding convergence; EXIT charts; Turbo Trellis Coded Modulation; code design; distance spectrum; union bound;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

Conference_Location

12/1/2008 12:00:00 AM

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2008.06039522

Filename

4711167