Title :
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
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;
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
DOI :
10.1109/ISTC.2010.5613827
