Signal detection with precoding for MIMO-OFDM systems

Author

Hao, Miin-Jong ; Chang, Wen-Lin

Author_Institution

Nat. Kaohsiung First Univ. of Sci. & Technol., Kaohsiung

fYear

2007

fDate

Nov. 28 2007-Dec. 1 2007

Firstpage

522

Lastpage

525

Abstract

Using QR algorithm can reduce a large amount of computation in MIMO-OFDM with the conventional V- BLAST signal detection. However, the QR method also causes the error propagation in the signal detection procedure. We propose a method applying the precoding process in the transmit end for various detection algorithms. The precoding process can cancel interference at transmit end to attain free of error propagation. Simulation verified the work in error propagation cancellation and excellent system performance is obtained.

Keywords

MIMO communication; OFDM modulation; precoding; signal detection; MIMO-OFDM systems; QR algorithm; V-BLAST signal detection; detection algorithms; error propagation; interference cancellation; precoding; signal detection; Antennas and propagation; Interference cancellation; MIMO; Matrix decomposition; OFDM; Receiving antennas; Signal detection; Signal processing algorithms; Transmitting antennas; Wireless communication; Error propagation; GMD; QR; Tomlinson-Harashima (TH); VBLAST;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communication Systems, 2007. ISPACS 2007. International Symposium on

Conference_Location

Xiamen

Print_ISBN

978-1-4244-1447-5

Electronic_ISBN

978-1-4244-1447-5

Type

conf

DOI

10.1109/ISPACS.2007.4445939

Filename

4445939