Superposition mapping with adaptive bit loading for BICM-OFDM systems

Author

Shi, Zhenyu ; Wo, Tianbin ; Hoeher, Peter Adam

Author_Institution

Fac. of Eng., Univ. of Kiel, Kiel, Germany

fYear

2010

fDate

6-10 Sept. 2010

Firstpage

166

Lastpage

170

Abstract

Superposition mapping (SM) is a newly evolved non-bijective modulation format. By superimposing a certain number of the binary symbols, SM is able to form a Gaussian-like constellation which has the potential to approach the channel capacity bound. Compared to conventional bijective mapping schemes such as PSK and QAM, SM does have some unique performance characteristics. In conjunction with BICM-OFDM, in this paper we investigate the performance of SM over multipath fading channels. Furthermore, a water-filling algorithm is proposed for BICM-OFDM with SM in order to exploit the diversity of the channel.

Keywords

OFDM modulation; channel capacity; diversity reception; fading channels; multipath channels; BICM-OFDM systems; Gaussian-like constellation; adaptive bit loading; binary symbols; channel capacity; diversity channel; multipath fading channels; non-bijective modulation format; superposition mapping; water-filling algorithm; Electronic mail; Manganese; Quadrature amplitude modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Turbo Codes and Iterative Information Processing (ISTC), 2010 6th International Symposium on

Conference_Location

Brest

Print_ISBN

978-1-4244-6744-0

Electronic_ISBN

978-1-4244-6745-7

Type

conf

DOI

10.1109/ISTC.2010.5613827

Filename

5613827