Cooperative Transmission Utilizing High Order Superposition Modulation with Iterative Detection

Author

Huan, Shuang ; Fei, Zesong ; Huang, Li ; Kuang, Jingming

Author_Institution

Dept. of E.E., Beijing Inst. of Technol., Beijing, China

fYear

2009

fDate

24-26 Sept. 2009

Firstpage

1

Lastpage

5

Abstract

In this paper, we propose an improved decode-and-forward (DF) relaying mode utilizing high order superposition modulation (HOSM) and iterative detection techniques, in which each user takes turns to transmit signal that is the superposition of its own and its partner´s information. As the designed HOSM scheme is not gray mapping, we introduce iterative detection to further improve system performance. Simulation results show that the new strategy with superposition 16-QAM modulation (16-QAM SM) outperforms the classical DF system by about 1.5 dB and system with superposition 64-QAM modulation (64-QAM SM) is about 1 dB better than the classical DF scheme. Furthermore, the proposed systems with iterative detection can achieve extra 0.2-0.5 dB gains in the signal-to-noise ratio (SNR) range of interest.

Keywords

decoding; iterative methods; quadrature amplitude modulation; radio networks; signal detection; QAM modulation; cooperative transmission; decode-and-forward relaying mode; gain 0.2 dB to 0.5 dB; gray mapping; high order superposition modulation; iterative detection techniques; transmit signal detection; wireless networks; Cooperative systems; Decoding; Diversity methods; Gain; Mobile antennas; Power system modeling; Relays; Samarium; System performance; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-3692-7

Electronic_ISBN

978-1-4244-3693-4

Type

conf

DOI

10.1109/WICOM.2009.5302768

Filename

5302768