A Novel Constellation Mapping VBLAST Zero Forcing Detection Algorithm in MIMO-OFDM System

Author

Fu, Hongliang ; Tao, Yong ; Yang, Tiejun ; Zhang, Yuan

Author_Institution

Inst. of Inf. Sci. & Eng., Henan Univ. of Technol., Zhengzhou, China

fYear

2010

fDate

29-31 Oct. 2010

Firstpage

1

Lastpage

4

Abstract

A novel constellation mapping VBLAST zero forcing detection algorithm in MIMO-OFDM system is proposed in this paper. First, the signal is cycled and successively mapped from the whole space of constellation points and is regarded as the first the underlying detection signals to maximize the performance of the first detection layers at the receiver. Then, the traditional ZF detection algorithm is used for the remaining received signal. At last, a set of the optimal detection signal is determined as the decoding result based on the maximum likelihood criterion. The proposed algorithm is mainly to overcome the complexity of ML algorithm and the poor performance of ZF algorithm. Simulation results show that the proposed algorithm is superior to the traditional ZF algorithm.

Keywords

MIMO communication; OFDM modulation; maximum likelihood decoding; signal detection; MIMO-OFDM system; ML complexity algorithm; VBLAST algorithm; ZF detection algorithm; constellation mapping algorithm; constellation points; decoding; maximum likelihood criterion; receiver; signal detection; zero forcing detection algorithm; Complexity theory; Constellation diagram; Detection algorithms; MIMO; Maximum likelihood decoding; OFDM; Receiving antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia Technology (ICMT), 2010 International Conference on

Conference_Location

Ningbo

Print_ISBN

978-1-4244-7871-2

Type

conf

DOI

10.1109/ICMULT.2010.5631488

Filename

5631488