Adaptive Modulation and Space-Time Coding Scheme Based on Constellation-Constrained Capacity

Author

Xu, Li ; Zhu, Jinkang ; Qiu, Ling

Author_Institution

Dept. of Electron. Eng. & Inf. Sci., Univ. of Sci. & Technol. of China, Hefei, China

fYear

2010

fDate

6-9 Sept. 2010

Firstpage

1

Lastpage

5

Abstract

Adaptive modulation is one of key technologies in wireless communication systems. The modulation order can be adaptively adjusted via different space-time coding under constrained transmission rate. Constellation-constrained capacity of different modulations under the constrained transmission rate and the adaptive modulation and space-time coding(AM-STC) scheme are analyzed in this paper. Analysis suggests that lower modulation satisfying the transmission rate can get higher spectrum efficiency at high SNRs and the simulations show that the AM-STC scheme is helpful to select the best modulation at low SNRs. Moreover, the simulation results are reasonable agreement with the results of theoretical analysis.

Keywords

adaptive modulation; space-time codes; AM-STC scheme; adaptive modulation; constellation-constrained capacity; constrained transmission rate; space time coding; wireless communication systems; Adaptation model; Binary phase shift keying; Diversity methods; MIMO; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd

Conference_Location

Ottawa, ON

ISSN

1090-3038

Print_ISBN

978-1-4244-3573-9

Electronic_ISBN

1090-3038

Type

conf

DOI

10.1109/VETECF.2010.5594206

Filename

5594206